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 y: W_3(y). forall y: U_4(y). forall y: U_2(y).
forall y: W_3(y) and U_4(y) can be inferred via the universal conjunction rule. forall y: W_3(y) and U_2(y) can be inferred via the universal conjunction rule. forall y: U_4(y) and W_3(y) can be inferred via the universal conjunction rule. forall y: U_4(y) and U_2(y) can be inferred via the universal conjunction rule. forall y: U_2(y) and W_3(y) can be inferred via the universal conjunction rule. forall y: U_2(y) and U_4(y) can be inferred via the universal conjunction rule.