4. A machine costing Rs. 8500 will have a scrap value of Rs. 300. Machines of this class have a working hour average life of 25000 hours. What will be the depreciation charge at the end of the first year if the machine is operated for a total duration of 1500 hours?
A. Rs. 548.50
B. Rs. 492.00
C. Rs. 600.00
D. Rs. 542.00