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D. ACTIVITY 1. Suppose p is true, q is false, r is true, and t is false. Find the truth value of the following (2 points each). A. "p A (q Vr) C. ("TV q) Aq B. (p V q) V ("p V q) D. ("p Vr) 2. Using a truth table, prove: [(p - q) A ~q] - p is a tautology (10 points) 3. Construct a truth table for the following statement: [(p - q) A ("q - n)] V (p-r) (10 points)