Q8.7MSQMarks unknown∑1≤k≤nO(n)\displaystyle \sum_{1\leq k\leq n} O(n)1≤k≤n∑O(n), where O(n)O(n)O(n) stands for order nnn is:(A)O(n)O(n)O(n)(B)O(n2)O(n^2)O(n2)(C)O(n3)O(n^3)O(n3)(D)O(3n2)O(3n^2)O(3n2)(E)O(1.5n2)O(1.5n^2)O(1.5n2)Sign in to save attempts.Show answer← PreviousNext →SolutionsDiscussionLoading…Sign in with Google