Question 9 of 35. Which of the following is NOT a safe harbor option under the Tangible Property Regulation certain costs instead of depreciating them? De minimis safe harbor. Cost below $100 safe harbor. Routine maintenance safe harbor. https://hrblock.csod.com/Evaluations/EvalLaunch.aspx?loid=5d9f32ac-d78b-4c60-ac92-abb4003b4f53&evallvi= Self-employed taxpayers pay self-employment tax on: The gross profit of the business reduced by 15.3%. The net profit of the business. The net profit of the business reduced by 7.65%. The tentative profit of the business. Mark for follow up