A machine is purchased on 1st April, 2018 for Rs 80,000. Expenses incurred on its installation is Rs 20,000. The residual value at the end of its expected useful life of 4 years is estimated at Rs 10,000. The amount of depreciation under Straight Line Method, for the year ended on 31st March, 2019 will be:
A. Rs 22,500.
B. Rs 20,000.
C. Rs 17,500.
D. Rs 13,125.