A company used straight line deperciation for an item of equipment that cost 12,000, had a saps age value of 2000, and a five year useful life . After deperciatin the asset for three complete years , the salvage value was reduced by 1200 and its total useful life was increased from five years to six years. Determine the amount of deperciation to be charges against the machine during each time of the remaining years of its useful life.

a. 1000

B.1800

C. 1467

D.1600

E.2160