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: Karen is not driving a car. It is windy if and only if John is a taxi driver. Karen is driving a car if and only if it is windy.
If it is windy, then John is a taxi driver can be inferred via the biconditional elimination rule. If Karen drives a car, then it is windy can be inferred via the biconditional elimination rule. If John were a taxi driver, then it is windy can be inferred via the biconditional elimination rule. If it is windy, then Karen is driving a car can be inferred via the biconditional elimination rule. It is not windy can be inferred via the biconditional elimination rule.