OF A company's total expected overhead for the year is $500,000. Two activity cost pools have been identified: Customer Service with a total cost of $200,000 and a total activity of 25,000 customer service calls; and Product Development with a total cost of $300,000 and total activity of 20,000 development hours. Using activity-based costing, calculate the appropriate activity rate(s) O $20 per customer call and dam