Question 27 Not yet Why is it important to keep a binary search tree (BST) balanced (i.e., short-ish overall, and even-ish on the left and right sides.) Select all that apply. answered Marked out of 1.00 Select one or more: P Flag question O a. To ensure the running time of the SSet add, remove, and find operations are O(log n). o b. To keep the height of the tree short. O c. It isn't important to maintain balance, as the BST property ensures the tree balanced without any extra work. O d. To keep the length of the search paths short