Shanahan Construction Purchased a Crane on January 1, 2010, for $102,750

Shanahan Construction purchased a crane on January 1, 2010, for $102,750. At the time of purchase, the crane was estimated to have a life of 6 years and a residual value of $6,750. In 2012, Shanahan determined that the crane had a total useful life of 7 years and a residual value of $4,500. If Shanahan uses the straight-line method of depreciation, what will be the 2012 depreciation expense for the crane?

A) $16,000
B) $13,250
C) $9,464
D) $8,000