The following data is available for Mike's Phone Repair Shop for 2020: Repair technician's wages $360,000 Fringe benefits 80,000 Overhead 60.000 Total 500,000 The desired profit margin is $25 per labor hour. The material loading charge is 25% of invoice cost, it is estimated that 5000 labor hours will be worked in 2019, In January 2020. Mike repairs a cellphone that uses parts of $200. Its material loading charge on this repair would be $200 b. 520 C 550 d. 572