please only answer if you have the correct answer. people keep giving me the wrong answers on here. i know 100% the answer is NOT A. The last person told me A and its wrong.

Not A Question 4 of 15. On September 16, 2020, Margaret sold a vehicle she had initially purchased in January 2018 for use in her business. This was the only asset sho purchased that yoar, and she elected not to claim the Section 179 deduction or the special depreciation allowance, Margaret used the vehicle 100% for business purposes each year that she owned it. What convention will she use to figure her depreciation deduction for the year of salo? Half-year Mid-month Mid-quarter Straight-line Mark for follow up