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: Susan is fast or it is not snowing. James is climbing a mountain. If Susan were fast, then James is not climbing a mountain.
Susan is not fast can be inferred via the modus tollens rule. If it snows, then Susan is fast can be inferred via the rewriting rule.