Use the Sum-Of-The-Years'-Digits Method of Depreciation

Use the sum-of-the-years'-digits method of depreciation. Round to the nearest dollar.
-Find the book value at the end of the third year for a service van which cost $16,000, has a life of 8
Years, and an estimated scrap value of $1,600.

A) $7,600
B) $10,000
C) $8,400
D) $6,000