Answer:
Option C.
Buy the one with the higher MU-to-P ratio.
Explanation:
The marginal utility-price ratio indicates the satisfaction derived from the last dollar spent on a good.
Marginal utility helps govern the spending actions of consumers. They usually spend with the aim of getting the most satisfaction and spending the least amount of money on the product.
If the consumer attains more satisfaction from any of the products, that is the product that the consumer will buy.