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_16: Q_16(x_16) -> R_10(x_16). exists x_16: R_10(x_16) -> P_8(x_16). forall x_16: P_8(x_16) <-> Q_8(x_16). forall x_16: S(x_16) <-> Q_16(x_16).
exists x_16: Q_16(x_16) -> P_8(x_16) can be inferred via the existential transitivity rule. forall x_16: P_8(x_16) -> Q_8(x_16) can be inferred via the universal biconditional elimination rule. forall x_16: S(x_16) -> Q_16(x_16) can be inferred via the universal biconditional elimination rule. forall x_16: Q_8(x_16) -> P_8(x_16) can be inferred via the universal biconditional elimination rule. forall x_16: Q_16(x_16) -> S(x_16) can be inferred via the universal biconditional elimination rule.