3. Sarah regards wine and cheese as perfect complements, and isn't much interested on either on it's own. Her utility function over wine and cheese is U(w, c) = [min(c, 2w) 1/2 a. How much wine and cheese does Sarah demand as a function of the prices of each, and her total budget B? b. If you double Sarah's budget, by how much does her wine and cheese demand increase? How much does her utility increase? c. Find compensating demand for wine and cheese as a function of a minimum utility level U. d. Find the expenditure function. To double utility, how much more does Sarah have to spend