31. Tony's preferences can be represented by the utility function u(X, Y) = X0.4y0.6 The graph below represents Tony's budget line. When he optimally chooses his consumption bundle, what is the optimal mix of goods X and Y? YA 50 Budget Line 90 X A 5X=9Y B 9X=4Y 4X=6Y D 4X 9Y 5X=6Y31. Tony's preferences can be represented by the utility function u(X, Y) = X0.4y0.6 The graph below represents Tony's budget line. When he optimally chooses his consumption bundle, what is the optimal mix of goods X and Y? YA 50 Budget Line 90 X A 5X=9Y B 9X=4Y 4X=6Y D 4X 9Y 5X=6Y