A machine costs 50000 and it is estimated that it will be used for for 5 years.The estimated salvage value is 10,000 for this purchase. If the straight line depreciation is used, what will the remaining book value balance at the end of year 4? (Note: Find Bn remaining balance after calculating the annual deprecation allowance)

Select one:

a. 18000

b. 11000

c. 8000

d. 18000

e. 16000

f. 10000