All Purpose Rentals offers a boat rental service, Consider the following costs of the company over the relevant range of 10,000 to 40,000 hours of operating time for its hours: Compute the total cost per unit wben the operating time is 20,000 hours. A) $6 B) $12 C) $18 D) $24 All Purpose Rentals offers a boat rental service, Consider the following costs of the company over the relevant range of 10,000 to 40,000 hours of operating time for its hours: Compute the total cost when the activity level is 50,000 hours A) $300,000 B) $240,000 C) $540,000 D) Can not be determined