Michaela has reference-dependent preferences over mugs (c) and money (c) - with reference points r and r2, respectively represented by the following utility function U(C,C,r1,)= v(3C-3r) + V(C-r) where v(x) = x for x 0 and v(x) =3x for x < 0 Suppose that Michaela's initial endowment of money is zero, and that she starts with zero mugs. Assume that Michaela does not have a mug and is not expecting to purchase a mug. What are Michaela's buying prices, pb, for a mug?