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: Barbara is cooking if and only if Jessica is a soldier. Patricia is driving a car if and only if Jessica is a soldier. Barbara is not cooking.
If Barbara cooks, then Jessica is a soldier can be inferred via the biconditional elimination rule. If Patricia drives a car, then Jessica is a soldier can be inferred via the biconditional elimination rule. If Jessica were a soldier, then Barbara is cooking can be inferred via the biconditional elimination rule. If Jessica were a soldier, then Patricia is driving a car can be inferred via the biconditional elimination rule. Jessica is not a soldier can be inferred via the biconditional elimination rule.