D Question 7 2 pts Baber Brothers purchased a small building outside of Richmond, Virginia on January 1, 2014 for $500,000. The building's estimated useful life is 10 years and estimated residual value is $100,000. On January 1, 2015 a federal agency required Baber Brothers to install additional pollution control devices in the building at a cost of $80,000. With these new pollution control devices, Baber believes it is possible to extend the useful life by 6 years beyond its original estimate and increase the building's salvage value to $240,000. What is 2015 depreciation expense