Which action can be taken to resolve this problem?

An administrator notices that when a virtual machine is placed into a resource pool, a warning indicates that the virtual machine will receive a very large percentage of the total shares for the memory.

Which action can be taken to resolve this problem?

A.
Increase the memory resource allocation to the resource pool

B.
Increase the share value for the resource pool

C.
Change the shares setting from custom to high, medium, or low for the virtual machine

D.
Decrease the memory allocation for the virtual machine

Explanation:
vSphere Basic System Administration vCenter Server 4.0 ESX 4.0 ESXi 4.0, page 157

The Memory Resources panel lets you allocate memory resources for a virtual machine and specify
reservations, limits, and shares. Symbolic values Low, Normal, High, and Custom are compared to the sum of all shares of all virtual machines on the server and, on an ESX host, the service console.

By decreasing the memory share of a particular system, it receives less memory out of the total available memory.