rosalia buys only two goods x1 and x2. her utility function is cobb-douglas. her optimal choices have which of the following properties?
a. One of the goods is an inferior good and the other is a normal good. b. Her purchase of x₁ depends on her income and on the prices of both goods, p₁ and p2. c. Her purchase of x₁ does not depend on income. d. Her purchases for neither good depends on income. e. Her purchase of x2 depends only on her income and on the price of that good, p2.