Bethany Inc. has purchased a small track for use in deliveries, with the following valuations: Delivery services should increase the company's revenues by: 6000peryear The cost of products delivered will be about: 3000per year The company depreciates all assets using the straight-line method. Determine the payback period for the track: a) 2.67 years b) 1.33 years c) 2.00 years d) 4.00 years