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: p -> Q(a_10). forall x_15: Q(x_15) -> P_15(x_15). forall x_15: P_15(x_15) -> Q(x_15). P_15(a_10) -> p.
P_15(a_10) -> Q(a_10) can be inferred via the transitivity rule. forall x_15: Q(x_15) <-> P_15(x_15) can be inferred via the universal biconditional introduction rule. forall x_15: P_15(x_15) <-> Q(x_15) can be inferred via the universal biconditional introduction rule.