Equipment with a cost of $145,623 has an estimated residual value of $7,924 and an estimated life of 7 years or 14,991 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 3,934 hours? a. 536.135 54 D. 519,671.29 C. 535.00 d. 57.00