Factory utility costs are estimated based on the level of machine hours used. Total monthly fixed costs are expected to be $450,000, variable costs per machine hour are expected to be $24, and 15,000 machine hours are expected to be used in December, which of the following would be the best estimate of total factory utility costs for the month of December?

• $810,000

• $90,000

• $360,000

• $450,000