57. Award: 1.00 point 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 8 10 6 5 8 4 6 6 What level of total utility will the utility-maximizing consumer realize? > O 96 utils 108 utils 72 utils 142 utils