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_4. p_12. t.
r_4 and p_12 can be inferred via the conjunction rule. r_4 and t can be inferred via the conjunction rule. p_12 and r_4 can be inferred via the conjunction rule. p_12 and t can be inferred via the conjunction rule. t and r_4 can be inferred via the conjunction rule. t and p_12 can be inferred via the conjunction rule.