Will a stack ever have any "holes" $($memory no longer in use$)?$A$.$ No$.$ Pushes and Pops always occur at the top of the stack and don't create holes.B$.$ No$.$ The stack is automatically reorganized as soon as a hole is created.C$.$ Yes. Dynamic memory allocation and de$-$allocation may create gaps in the stack.D$.$ Yes. Holes are used for variables in subroutine activation.