Question 17 Not yet answered The time complexity of the removeBack() operation of the double ended queue implemented using single linear linked-based with tail reference is_____? Marked out of 2.00 Flag question Select one: O A. O(1) OB. O(n) OC. 0(2) O D.O(na) Question 18 Which is/are the application(s) of stack Not yet answered Marked out of 100 Flag question Select one: a. Function calls ob.check mathematical expression balance c. Evaluation of arithmetic expressions d. All of the above