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 Susan were a bartender, then it is windy. Susan is a bartender if and only if it is windy.
If Susan were a bartender, then it is windy can be inferred via the biconditional elimination rule. If it is windy, then Susan is a bartender can be inferred via the biconditional elimination rule.