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 $4 and $2, respectively, and that the consumer's income is $18. Units of X Marginal Utility, X Units of Y Marginal Utility, Y 1 20 1 16 2 16 2 14 3 12 3 12 4 8 4 10 5 6 5 8 6 4 6 6 What quantities of X and Y should be purchased to maximize utility? Multiple Choice 2 of X and 1 of Y 4 of X and 5 of Y 2 of X and 5 of Y 2 of X and 6 of Y