the main difference between stack and queue data structures is____? Question 23 Not yet answered Marked out of 100 p Flag question Select one: O a. in stack we can retrieve only the last element stored, while in the queue we can retrieve the first element stored only. ob, in stack we can remove only the first element stored, while in the queue we can retrieve the first element stored O c. in the stack and in the queue we can retrieve only the last element stored Od in both data structures we can remove the first element stored only Question 24 Not yet answered Suppose you haven't queue data structure implemented and wanted to implement the queue using stack as a client code and then how many stacks are needed ? Marked out of 200 Flag question Select one: a. 1 b.2 c.3 10 d. 4