Consider a new connective * with the following meaning: A* B evaluates to true just when A is true and B is false. In all other cases A* B evaluates to false. Draw the truth tables for a) A*B b) true * A C) A* (true * B) d) true * (true * A) * B)) e) Using the results above write a proposition equivalent to p^ -(q vr) using only the * connective, parentheses, p, q, r and true (it you need it)