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: U(h). forall z: U(z) -> R(z). p_2.
U(h) and p_2 can be inferred via the conjunction rule. p_2 and U(h) can be inferred via the conjunction rule. exists x: U(x) can be inferred via the existential generalization rule.