For the following argument involving statements p, q and r use a truth table to determine the validity of the argument. 1. p q 2.rp 3. ~1 ~9 Check each correct statement below. (You can check more than one.) U U The argument is invalid when p is false, q is false and r is false. The argument is valid. The argument is invalid when p is true, q is false and r is true. The argument is invalid. The argument is not a tautology. The argument is invalid when p is false, q is true and r is false. The argument is invalid when p is false. q is false and r is true. The argument is invalid when p is true. q is true and r is false. The argument is invalid when p is false. q is true and r is true. The argument is a tautology.