Deuce Company Purchased a Truck for $50,000 on January 2

Deuce Company purchased a truck for $50,000 on January 2, 2013. The asset has an expected salvage value of $5,000 at the end of its five-year useful life. (DDB switches to straight-line in year 2015.)
-What depreciation method is used if depreciation expense is $6,000 in 2016?

A) Straight-line.
B) Sum of years' digits.
C) Double-declining balance.
D) Composite.