ABC purchased a machine costing $5,00,000 with an estimated salvage value of $ 50,000 and an estimated useful running life of 10,000 hours. If the machine was run for 2000 hours in its first year, depreciation to be charged for the year would be:
a. $ 80,000
b. $ 70,000
c. $ 90,000
d. $1,00,000