Which of the following is/are correct statement/statements?

[A] An FSM with 1 stack is more powerful than an FSM with no stack.

[B] An FSM with 2 stacks is more powerful than an FSM with 1 stack.

[C] An FSM with 3 stacks is more powerful than an FSM with 2 stacks.

[D] Both (A) and (B)