6-A company purchased furniture on January 1. Its cost was $20,000 and it had a residual value of $2,400. Its useful life is determined to be 55 years. Using?double-declining balance?depreciation, the depreciation for year 1 to the nearest dollar will?be

A.

$4,000.

B.

$8,000.

C.

$3,520.

D.

$7,040.