Answer: The answer is (A). contact a pharmaceutical company about marketing and selling the drug
Explanation: this is because in order to put his business on the market he must get it verified first, and there might be a chance that it can be accepted, or it can be declined, which crosses out option D. Doing option B. is illegal, and no scientist would choose option C because noone wants someone else to take the fame for their work.
Hope it helps :D