#35 Sand is falling onto a cone-shaped pile at 10 cubic feet per minute. The diameter of the base of this cone is always 3 times the height of the cone. At what rate is the height of the sand pile increasing when the pile is 5 feet high?: * O(A) 8/ (45TT) ft/min O(B) 9TT / 4 ft/min O(C) 2/ (25T) ft/min O(D) 40TT /3 ft/min

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A: