An operations manager has just implemented economic production quantity model. Using the information below, compute the maximum inventory level for the product.

setup cost = $50 per lot

holding cost = $10 per unit per year

annual demand = 30,000 units,

operations days = 300 days per year

production rate = 500 units per day

A. 520

B. 27,000

C. 314

D. 378

E. 491