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Which of the following is FALSE about divide-and-conquer? A. In a divide-and-conquer solution, the size of the problem passed into the recursive call must be strictly smaller than the size of the original problem. B. Divide and conquer can naturally be implemented as a recursive solution. C. There can be multiple recursive calls in a divide-and-conquer solution. D. In a divide-and-conquer solution, the operations other than the recursive calls should take O(1) time in total