A Machine with a Five-Year Estimated Useful Life and an Estimated

A machine with a five-year estimated useful life and an estimated 10% salvage value was acquired on January 1, 2013. The depreciation expense for 2015 using the double-declining balance method would be original cost multiplied by

A) 90% × 40% × 40%.
B) 60% × 60% × 40%.
C) 90% × 60% × 40%.
D) 40% × 40%.