The salvage value of a ten-year-old truck is $10000. If this truck is on the Balance Sheet of a transportation company as a Class 8 asset with a CCA rate of 20%, what was the present worth if this salvage value at the time of the truck's purchase if the corporate tax rate is 35% and annual after-tax interest rate is 5%?

A. $10,000

B. $8,200

C. $7,200

D. $4,420

E. $6,240