23. The theory of loss aversion and reference dependence implies that (a) equilibrium allocations will usually be outside the Pareto set (b) the location of the Pareto set may depend on the initial allocation (c) the Pareto set is piecewise linear (d) the Pareto set is reduced to a single point in the Edgeworth box (e) the Pareto set lies on two adjacent sides of the Edgeworth box