7) In class, we discussed one-variable propositions and two-variable propositions. Why not three - possible compound propositions F(A, B, C)? Show that whatever F(A, B, C) is, it can be equivalently expressed in terms of F(A, B, True), F(A, B, False), and C, using only 7,,V. 7) In class, we discussed one-variable propositions and two-variable propositions. Why not three - possible compound propositions F(A, B, C)? Show that whatever F(A, B, C) is, it can be equivalently expressed in terms of F(A, B, True), F(A, B, False), and C, using only 7,,V