Question 21 Not yet answered Find the postorder traversal of the binary tree shown below. Marked out of 1.00 R Flag question U x W Select one: o a. STWUXV QRP O b. PQRSTUVWX O C.SWTQXUVRP O d. WRSQPVTUX Which of the following sorting algorithms is shown in the sort below? Question 15 Not yet answered Marked out of 1.00 51 11 56 83 20 26 33 Flag question 1.11 51 56 83 20 26 33 2.11 20 56 83 51 26 33 3.11 20 26 83 51 56 33 4.11 20 26 33 51 56 83 5.11 20 26 33 51 56 83 6.11 20 26 33 51 56 83 Select one: a. None is correct b.Selection Sort C. Insertion Sort d. Merge Sort