What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? If it is sunny, then it is windy. Susan is an office clerk if and only if it is sunny. If it is windy, then Susan is an office clerk.
If it is sunny, then Susan is an office clerk. If Susan were an office clerk, then it is sunny. If it is sunny, then Susan is an office clerk.