Please help me answer this question! I will give a good review right away! Thank you!

Under the MACRS method of depreciation, the half-year convention applies for the A. last year of ownership only B. last year of depreciation only C. first year of ownership only D. first year of ownership and last year of either ownership or depreciation With respect to the MACRS method of depreciation, the "class life" of a capital asset is its O A. Service life that results in zero salvage value B. Shortest possible service life C. Median service life O D. Longest possible service life