I need your help to clarify my answer for the following calculations: Maks in. uses straight-line depreciation for all is depreciable assets. Maks sold a used pieces of machinary on Dec 31, 2017, that is purchased on Jan 1, 2016 for $10,000. The asset had a 5 year life, zero residual value, and $2,000 accumulated depreciation as of Dec 31. 2016. If the sales price of the used machine was $7,500, the resulting gain or loss upon the sale was which of the following amounts?

a. Loss of $500

b. Gain of $500

c. Loss of $1,500

d. Gain of $1,500

e. No gain or loss upon the sale.

The answer in the site was saying a, but I was saying d , my calculations were:

Cost = 10,000 , residual value = 0, no. of years=5, so depreciation expense should be = (10,000-0)/5= 2,000 USD.

He sold the asset after 2 years, so the depreciation expense in straight line method should be = 2,000 *2 = 4,000 USD. Then net book value = 10,000-4,000 = 6,000.

The asset was sold for 7500 while its net book value 6,000 so the gains are 1,500 USD correct?