The rate of healing; A'(t)(in square centimeters per day), for a certain type of abrasive skin wound is given approximately by the table 0 93 4 061 088 5 053 2 0 77 6 0 49 3 067 7 (A) Use left and right sums over five equal subintervals to approximate the area under the graph of A'(t) from t tot-5 The left sum; L 5; is The right sum, R5, is (B) Select the true statement. o o 5 5 5 5