COVID Co. produces two different products (Product Y and Product B) using two different activities: Machining, which uses machine hours as an activity driver, and Inspection, which uses number of batches as an activity driver. The cost of Machining is $500,000, while the cost of Inspection is $30,000. Product Y uses 20% of total machine hours and 75% of total batches. What is the total Machining cost assigned to Product B? Select one: a. $400,000 O b $22,500 C. $7.500 d. $375,000