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: If it is overcast, then it is snowing. It is overcast. It is cold.
It is snowing can be inferred via the modus ponens rule. It is overcast and it is cold can be inferred via the conjunction rule. It is cold and it is overcast can be inferred via the conjunction rule.