bject Oright - Professoramo push(2), ta a) [1 points 1 An initially empty queue Q has performed the following operations (not necessarily in this order. There is no error message produced for any operation.): 36 enqueue operations, 24 front operations, 20 of which returned null to indicate an empty queue, and 7 dequeue operations. What is the current size of Q? Lee/UOttawa b) 12 points] What are the values returned (in order) during the following sequence of Stack operations? Underline operations that return a value. os manga scans s ro pano u 0. push(7), pop(), pop(). C) 12 points] What are the values returned (in order) during the following sequence of Deque operations? Underline operations that return a value. addFirst(23), first(), last(), addLast(2), addLast(70), first(), addFirst(11), last()