angel uses unit of activity method in depreciating its operational car. One car was purchased at a cost of $500 . over its 4-year useful life the car is driven 200 kilometers. residual value is expected to be $40. What is the amount of depreciation for the second full year, during which car was used 50 kilometers?

a. 115

b. 135

c. no answer

d. 130

e. 120