Answer the question on the basis of the following marginal utility data for products X and Y Assume that the prices of X and Y are $6 and $3. respectively, and that the consumer's income is $18 Marginal Marginal Units of Utility, XUmis of Utility. Y Y 20 16 16 2 14 12 12 4 10 6 What quantities of X and Y should be purchased to maximize utility? 2 of x and 2 of Y O lof x and OofY 2 of x and s of Y O lof x and a of Y