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: ~W_4(e). q. forall z: W_4(z) -> R_3(z). forall z: R_3(z) -> W_4(z).
~W_4(e) and q can be inferred via the conjunction rule. q and ~W_4(e) can be inferred via the conjunction rule. forall z: W_4(z) <-> R_3(z) can be inferred via the universal biconditional introduction rule. forall z: R_3(z) <-> W_4(z) can be inferred via the universal biconditional introduction rule.