Equipment with a cost of $143,973 has an estimated residual value of $9,946 and an estimated life of 7 years or 13,167 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 3,657 hours?

a. $19,146.71

b. $7.00

c. $37,224.63

d. $36.65