Which of the following are essential steps to take when creating a virtual server?

Which of the following are essential steps to take when creating a virtual server?

A.
Select a machine image to run, select an application set to run, select security credentials.

B.
Select a machine image to run, select an application set to run, select the size of the virtual machine.

C.
Select a machine image to run, select security credentials, select the size of the virtual machine.

D.
Select an application set to run, select security credentials, select the size of the virtual machine.