Maple, Inc., owns a delivery truck which initially cost $40,000. After depreciation of $25,000 had been deducted, the truck was traded-in on a new truck that cost $50,000. Maple was required to pay the car dealer $20,000 in cash. What is Maple's basis for the new truck assuming the exchange qualifies for 1031 treatment?

	a.	$0.
	b.	$15,000.
	c.	$35,000.
	d.	$50,000.
	e.	None of the above.