Consider the following functions. F(L,K) = K( e'- - 1) G(L,K) = (L)"/2 + K H(L,K) = (L+1)"/2 + K V(L,K) : |n(L+'|) + K U(L,K) = K eL W(L,K) : 100 L + 3 K mm = L2 + 3 K2 Which function or functions are not valid production functions? Select one or more: 3. None. They can all be used as production functions. b.Z c.U d.W e.G f.H g.V