Equipment with a cost of $152,849 has an estimated residual value of $8,182 and an estimated life of 7 years or 13,268 hours. It is to be depreciated by the straight-line method. What is the amount of depreciation for the first full year, during which the equipment was used 3,894 hours?

a. $7.00

b. $20,666.71

c. $42,458.04

d. $37.15