Calculate the following:
a. the first year of depreciation on a residential rental building costing 200,000 purchased on may 2, 2012.
b. the second year of depreciation on a computer costing 3,000 purchased in may 2011, using the half year convention and acclerated depreciation
c. the first year of depreciation on a computer costing 4,000 purchased in may 2012, use half year convention, straight-line depreciation
d. the third year of depreciation on business furniture costing 10,000 purchased in march 2010, using half-year convention and accelerated depreciation.