Moon company has an average selling price of OMR 23 per unit and an average variable cost of OMR 13 per unit. The fixed cost is OMR 150,000 per month. How many units should the company sell in December to reach an operating income of OMR 50,000? Select one: O a. 21,000 O b. 22,000 O c. 20,000 O d. None of the answers given O e. 23,000