Calculate the following amounts:

a. The first year of depreciation on a residential rental building costing $100,000, purchased on November 30. b. The first year of depreciation on an auto used 100 percent in business, costing $30,000, purchased in May 2016. (No bonus depreciation deducted). c. The second year of depreciation on a computer used exclusively for business, costing $7,000, purchased May 2015. d. The third year of depreciation on business furniture costing $1,000, purchased in July 2014, using the half-year convention and accelerated depreciation.