Ann, Bob and Dave share the cost of hooking up to a network. The (stand-alone) costs of hooking up the various subsets of agents are C(A) = C(B) = 100; C(D) = 120 C(AB) = C(AD) = 140; C(BD) = 120 C(ABD) = 200 (a) Compute the cost shares recommended by the Shapley value and check that it is not in the stand-alone core. (b) The core contains a unique allocation. Compute it.