Which two methods can be used to improve performance and reduce CPU contention of this virtual machine while maintaining compatibility with DRS?

It appears that a single vCPU virtual machine in a resource pool called Production is having
performance problems because it does not have enough CPU resources available.
Which two methods can be used to improve performance and reduce CPU contention of this
virtual machine while maintaining compatibility with DRS? (Choose two.)

A.
Configure a CPU reservation for this virtual machine.

B.
Increase the CPU shares for the resource pool.

C.
Increase the CPU shares for the virtual machine.

D.
Increase the share priority setting for the Production resource pool.