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 windy, then it is late. It is not late. Thomas is poor. If Thomas were poor, then Charles is making tea.
Charles is making tea can be inferred via the modus ponens rule. It is not windy can be inferred via the modus tollens rule. It is not late and Thomas is poor can be inferred via the conjunction rule. Thomas is poor and it is not late can be inferred via the conjunction rule.