Utility frontier There are two economic agents, A and B. Utility functions are the following: UA(2A, YA) := VIAVYA and uB(XB, YB) := 2BŽYB. The endowment for the economy is (ī, y) = (6,6). (a) Find the set of all Pareto efficient allocation. (b) Find the utility frontier. (c) Suppose that the initial endowment is e4 = (4, 2) and eB = (2,4). Find the competitive equilibrium.