please solve this question using java

Consider the use of a stack for storing information about function activations as a program runs. As discussed in lecture this is called the run-time stack or call stack. Reminder: a stack has the operations push, pop, top, and isEmpty Part A. In this application calling a function corresponds to which stack operation? Part B. In this application returning from a function corresponds to which stack operation? Part C. Consider the following program and suppose we are currently executing at the point labeled **C**. Show two different possible contents of the run-time stack at this point (Note there are more than two correct answers). Make it clear which direction the stack is going by labeling which end is the top of each stack you draw public class StackProb public static void main (String[] args) WO xO public static void W) xO Z 0 public static void XO YO Z 0 public static void YO Z ) CA public static void 2) return