The Crimson Cartage Company purchased a new truck at a cost of $42,000 on July 1. The truck is estimated to have a useful life of 6 years and a salvage value of $6,000. Using the straight-line method, how much depreciation expense will be recorded for the truck during the first year ended December 31?

a. $3,000

b. $3,500

c. $4,000

d. $6,000 

e. $7,000