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_4). r_1 -> p. forall x_12: R_12(x_12) <-> S_12(x_12). p -> S_12(j_4).
r_1 -> S_12(j_4) can be inferred via the transitivity 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.