A restaurant has received an all-units quantity discount schedule from its chickpea supplier. Pounds per Order 1-299 Price per Pound $0.60 $0.50 $0.40 300-499 500 or more The restaurant consumes 5,000 pounds of chickpeas per year. The setup cost is $1.20 per order, and the holding cost percentage is estimated to be 20%. Assume that chickpeas are nonperishable. What are the possible optimal order quantities? A. {346, 387} B. {316, 346, 500} C. {346, 500} D. {316, 346, 387} O E. {316, 346}