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: ~R_12(j). p_1 <-> q. forall x_12: R_12(x_12) <-> S_12(x_12). p_1 -> S_12(j).
p_1 -> q can be inferred via the biconditional elimination rule. q -> p_1 can be inferred via the biconditional elimination rule. forall x_12: R_12(x_12) -> S_12(x_12) can be inferred via the universal biconditional elimination rule. forall x_12: S_12(x_12) -> R_12(x_12) can be inferred via the universal biconditional elimination rule.