This question is about bound and free variables in predicate wffs. Pick the correct answer for each statement. 1x P(x) 3y R(x, y) 1x ((P(x) 1 Q(x)) y R(x, y)) 1. No variables are free, they are all bound 2. x is free and y is bound Tx (P(x) By R(x, y)) 3. y is free and x is bound 1x ((P(x) 1 Q(y)) By R(x, y))