Windsor Limited makes and sells a single product. The company employs a flexible budgeting system that covers a relevant range from 20,000 units to 25,000 units and a just in time inventory system. Budget data for April, based on 22,000 units, are as follows: Prime costs Manufacturing overhead Selling and administrative expenses Selling price $30 per unit $132,000 plus $3 per unit $30,000 plus $2 per unit $60 per unit What is the company's master budget operating income (loss) for April? $388,000. $463,000. $550,000. $625,000