(Discrete Math) Knights always tell the truth, Knaves always tell a lie and Spies can tell the truth or a lie. You meet three people A, B, C one of each type. Each of A, B, C knows what the other types are. A says I am the Knight, B says I am the Knave, C says I am not the knave. Let p represent A is the Knight, q represent B is the Knight and r represent C is the Knight. Use a truth table to assist in the determination of the type of each person