Marshall Products, Inc. purchased a truck for $35,000 on January 1. The truck had an estimated useful life of 100,000 miles and an estimated residual value of $5,000. In the third year of ownership, the car was driven 25,000 miles. Using the units of production method, the amount of depreciation expense for year 3 was

		$4,938.
		$6,000.
		$7,500.
		$8,750.