which two ways will the new ESXi 5.x implementation differ from ESX 4.1 implementation?

An existing vSphere environment will be upgraded to vSphere 5.
The current implementation utilizes ESX 4.1 and the new implementations will ESXi 5.x.
In which two ways will the new ESXi 5.x implementation differ from ESX 4.1 implementation? (Choose two)

A.
VMware ESXi 5.x does not provide a host-based firewall.

B.
VMware ESXi 5.x can boot from additional sources, such as a USB drive.

C.
VMware ESXi 5.x does not provide local command-line management capabilities.

D.
VMware ESXi 5.x can support virtual machine which larger resource configurations.

Explanation:

Option A is incorrect, ESXi have a internal firewall.
Page 36 from Vsphere Security – ESXi 5.0.pdf

Option B is correct.
Page 28 from vsphere-esxi-vcenter-server-50-installation-setup-guide.pdf

Option C is incorrect, ESXi have local command-line but is necessary enable it.
Page 9 from vsphere-esxi-vcenter-server-50-command-line-interface-getting-started-guide.pdf

Option D is correct. See all Maximum configuration for ESX 4 and ESX5 document.
Some example:
ESX 4
Max CPU – 8

ESX 5
Max CPU – 32