An asset, which had a first cost of $50,000 and an estimated salvage value 0f $10,000,was depreciated by the MACRS method. If its book value at the end of year three was $21,850 and its market value was $25,850, the amount of depreciation charged against the asset up to that time was closest to:

A) $18,850

B)$21,850

C)$25,850

D)$28,150