The Table Shows the Marginal Utility Schedules for Old Product

Multiple Choice

The table shows the marginal utility schedules for old product X and new product Y for a hypothetical consumer. The price of X is $4, and the price of good Y is $3. The budget of the consumer is $18. What is the increase in total utility from the original situation when purchasing just X, compared to now when the consumer purchases the utility-maximizing combination of both X and Y?

A) 12
B) 22
C) 42
D) 64