It is possible to Storage vMotion virtual machines that have snapshots?

The correct answer is B: False
See:
http://pubs.vmware.com/vsphere-50/index.jsp?topic=/com.vmware.vsphere.storage.doc_50/GUID-8AE88758-20C1-4873-99C7-181EF9ACFA70.html

Migration of virtual machines with snapshots is possible if the virtual machine resides on shared storage accessible to source and destination hosts.

Some restrictions apply when migrating virtual machines with snapshots. You cannot migrate a virtual machine with snapshots with Storage vMotion. Otherwise, migrating a virtual machine with snapshots is permitted, regardless of the virtual machine power state, as long as the virtual machine is being migrated to a new host without moving its configuration file or disks. (The virtual machine must reside on shared storage accessible to both hosts.)

sVmotion in vSphere 5 supports VMs with snapshots

http://blogs.vmware.com/vsphere/2011/08/vsphere-50-features.html
Storage vMotion support for snapshots

Storage vMotion Requirements and Limitations
You can migrate virtual machine disks with Storage vMotion if the virtual machine and its host meet the following resource and configuration requirements:
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For ESXi 5.0 hosts, you can migrate virtual machines that have snapshots. For earlier versions of ESXi, you cannot migrate virtual machines that have snapshots.
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Virtual machine disks must be in persistent mode or be raw device mappings (RDMs). For physical and virtual compatibility mode RDMs, you can migrate the mapping file only. For virtual compatibility mode RDMs, you can use the vSphere Client to convert to thick-provisioned or thin-provisioned disks during migration as long as the destination is not an NFS datastore. You cannot use the svmotion command to perform this conversion.
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The host on which the virtual machine is running must have a license that includes Storage vMotion.
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ESX/ESXi 3.5 hosts must be licensed and configured for vMotion. ESX/ESXi 4.0 and later hosts do not require vMotion configuration to perform migration with Storage vMotion.
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The host the virtual machine is running on must have access to both the source and target datastores.
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A particular host can be involved in up to four migrations with vMotion or Storage vMotion at one time. See “Limits on Simultaneous Migrations” in the vCenter Server and Host Management documentation for details.
If you use the vSphere Client for migration with svmotion, the system performs several compatibility checks. These checks are not supported by the svmotion vCLI command.