Suppose you are slicing an 11-inch-long carrot REALLY thin from the greens end to the tip of the root. If each slice has a circular cross section f(x) = 1(r(x)) for each x between 0 and 11, and we make our cuts at X1 , X2, X3, ..., X. then which of the following is a good approximation for the volume of the carrot? Choose the correct answer below. OA. ET [Xi + 1 -*; ] i = 1 OB. Z [ (X;+ 1) -1(*; ) ] * ; i = 1 13 OC. E( x ) [ Xi+ 1 - x ] i = 1 13 OD. Ef ( x; ) x ; i = 1