Given the following sequence: push(8), push(7), pop(), push(9) Assume we have an initial size of 5 for the array implementation. What would the top pointer show? Select one: a.9 O b. 7 O c. 0 O d. 8 Question 1 Not yet answered Marked out of 1.00 P Flag question We are using stack to evaluate a postfix expression. If we feed the following values what final values will be stored at the stack? (hint: Use the logic in the book) 24-1*+ Select one: a. 2 4-1*+ O b.-8 O d. 2-4 What should be the name of the following method? public T whatlsMyName() throws EmptyCollectionException if (isEmpty0) throw new EmptyCollectionException("Stack"); return stack[top-1] Select one: O a. expand O b. peek O c. push O d. pop For Stack data structure, what does the following operation do? public void doSomething (T element)h if (sizestack.length) expandCapacity0: stack[top] element: top++: Select one: o a. Push0 O b. Popo O C. Peek O d. isEmpty)