Select an appropriate expression to complete the method below, which is designed to return the element at the bottom of a Stack collection. The rest of the contents of the original stack (not including the bottom element) are restored before the method terminates. It is safe to assume that the original stack contains at least one element. public static Object getBottom(Stack theStack) Stack anotherStack - new Stack); while (theStack.size) > 1) anotherStack.push (theStack.pop)); while (anotherStack.size) >0) theStack.push (anotherStack.pop)) return o: O A. Object o anotherStack.peek0: O B. Object o theStack.pop0; C. Object o-anotherStack.popo; D. Object o theStack.peek0