5 Assume that X and Y are normal goods. Suppose that your utility function is U = X7 Yl and that the marginal utility from good X is MU); = %X_% YTl and that 3 3 the marginal utility from good Y is MU}: = %X3 Y_?. A. {3 points} If the price of X is $3. the price of Yis $6, and your income is $43, nd the optimal amount of each good to purchase. B. {3 points} Suppose that the price of Y increases to $8. Find the new optimal quanties of goods X and Y to purchase. C. {4 points} Based on your answer for part B, for good X, which is larger: the income or substitution effect? Explain