Suppose that there are two goods, X and Y. The price of X is $2 per unit, and the price of Y is $1 per unit. There are two consumers, A and B. The uti]it3.r function for consumer A is Us (my) = $\"y1_\(b) Show that consumer A's marginal utility decreases as consumption of each good in- creases (i.e., the utility function exhibit diminishing marginal utility in each good). (c) Suppose someone who has not taken ECONE321 tells you that hefshe has solved consumer A's utility optimization problem and that the optimal consumption bundle (5,?) is such that $2-E+$1-