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: T(x). exists x: T_2(x).
exists x: T_2(x) and T(x) can be inferred via the existential conjunction rule. exists x: T(x) and T_2(x) can be inferred via the existential conjunction rule.