What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Linda is a sailor if and only if it is sunny. It is sunny if and only if it is overcast. If Linda were a sailor, then it is overcast.
If Linda were a sailor, then it is sunny. If it is sunny, then it is overcast. If it is sunny, then Linda is a sailor. If it is overcast, then it is sunny.