Consider the all-units quantity discount schedule below. Quantity Ordered 1 - 499 500 - 999 1000 - 1499 1500 - 1999 2000 and over Price Per Unit $300 $280 $260 $230 $200 EOQ at that Price 952 986 1023 1087 1166 Which of the following sets of order quantities is guaranteed to contain the optimal solution (i.e., best order quantity)? O A. {986, 1000, 1500, 2000} OB. {1, 500, 1000, 1500, 2000} O C. {986, 1023, 1500} D. {952, 986, 1023,1087, 1166} O E. (1023, 1500, 2000}