Question 23 the main difference between stack and queue data structures is____? Not yet answered Marked out of 1.00 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. Flag question 7 Hide sidebars O b. in stack we can remove only the first element stored, while in the queue we can retrieve the first element stored 13 19 O c. in the stack and in the queue we can retrieve only the last element stored O d. in both data structures we can remove the first element stored only 25 Finish Question 24 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 ? Timel Not yet answered Marked out of 2.00 Select one: Flag question a. 1 O b. 2 c.3 d. 4