(a) Complete the following truth table. Use T for true and F for false. You may add more columns, but those added columns will not be graded. p q ~ q - p) - (~ q~ ~ p) P q T T T F -0 010 OVO F T 0-0 0-0 F F X 5 ? (b) Is the statement (~ q - p) + (~ q~ ~ p) a tautology, a contradiction, or neither? Why? Choose the best answer. The statement is a tautology. This is because it is true for all possible true-false combinations of p and q. X ? The statement is a tautology. This is because it is true for some true-false combinations of p and q and false for others. The statement is a contradiction. This is because it is false for all possible true-false combinations of p and q. The statement is a contradiction. This is because it is true for some true-false combinations of p and q and false for others. The statement is neither a tautology nor a contradiction