There are only two brands of tennis balls Tom purchases: "Wilson" and "Penn." The more he purchases of a ball, the lower the marginal utility of that ball. He spends all of his income and his marginal utility of a "Wilson" is 6 and his marginal utility of an "Penn" is 12. The price of a "Wilson" ball is $1 and the price of an "Penn" is $2. Which of the statements is true based on the above information?