Answer:
C
Explanation:
Yes if he is giving his opinions on Gensol just to increase the sales and he is not a medical doctor, and people will assume that he is, then he will enter in fraudulent activity. Obviously this is not a criminal offense but its not ethical.
Just to increase sales he must not introduce himself as doctor of anything, considering the fact that people will consider him medical doctor and rely on his opinion. Its purely unethical and immoral.