A company used straight-line depreciation for an item of equipment that cost $18,300, had a salvage value of $4,800 and a six-year useful life. After depreciating the asset for three complete years, the salvage value was reduced to $1,830 but its total useful life remained the same. Determine the amount of depreciation to be charged against the equipment during each of the remaining years of its useful life:

A.) $3,240.

B.) $1,350.

C.) $4,800.

D.) $4,320.

E.) $7,090.