What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: forall x_17: ~P_17(x_17). forall x_17: P_17(x_17) <-> Q(x_17). r_1 <-> Q(h).
r_1 -> Q(h) can be inferred via the biconditional elimination rule. Q(h) -> r_1 can be inferred via the biconditional elimination rule. forall x_17: P_17(x_17) -> Q(x_17) can be inferred via the universal biconditional elimination rule. forall x_17: Q(x_17) -> P_17(x_17) can be inferred via the universal biconditional elimination rule. forall x_17: ~Q(x_17) can be inferred via the universal biconditional elimination rule.