Answer:
If the number of male and female buyers is the same, then the best pricing strategy is to offer 2 different microwaves (option 3). One simple and cheap microwave for men and one with auto-defrost for women.
Step-by-step explanation:
If most buyers were women (significantly higher), then option 2 would be better, since $121 per microwave is a much higher price and even though total sales numbers may not be maximized, profits will probably be maximized.
If most buyers are men, then option 1 would be probably better, depending on the proportion of male vs female buyers.