Final answer:
To find the optimum order quantity for rice in pounds, use the economic order quantity (EOQ) formula. Based on the options provided, the closest answer is 38.8 K.
Step-by-step explanation:
To find the optimum order quantity for rice in pounds, we need to use the economic order quantity (EOQ) formula.
EOQ is given by the formula:

Where D is the annual demand, S is the ordering cost per order, and H is the annual holding cost per unit.
In this case, D = 480,000 boxes, S = $60, and H = 0.2 * (0.125/16) * 365 * Price per pound of rice.
The price per pound of rice is not given, so we cannot find the exact answer.
However, based on the options provided, the closest answer is 38.8 K.