If a virtual machine is removed from a Resource Pool, the total number of shares associated with the Resource Pool:
A.
Remains the same if a Custom Share value was configured, Increases if a High, Medium or Low value was configured
B.
Remains the same
C.
Decreases
D.
Increases
C is right. “When you remove a virtual machine from a resource pool, the total number of shares associated with the resource pool decreases, so that each remaining share represents more resources.”
http://pubs.vmware.com/vsphere-50/topic/com.vmware.vsphere.resmgmt.doc_50/GUID-727A88F2-D1C4-4AAE-8261-C75A1EA4A97A.html