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: Jessica is not excited. It is windy or it is sunny. If it is sunny, then Jessica is excited. If Jessica were excited, then it is sunny.
It is not sunny can be inferred via the modus tollens rule. If it is not sunny, then it is windy can be inferred via the rewriting rule. It is sunny if and only if Jessica is excited can be inferred via the biconditional introduction rule. Jessica is excited if and only if it is sunny can be inferred via the biconditional introduction rule.