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: It is late if and only if Linda is a lawyer. It is snowing if and only if Linda is a lawyer. It is not late.
If it is late, then Linda is a lawyer can be inferred via the biconditional elimination rule. If it snows, then Linda is a lawyer can be inferred via the biconditional elimination rule. If Linda were a lawyer, then it is late can be inferred via the biconditional elimination rule. If Linda were a lawyer, then it is snowing can be inferred via the biconditional elimination rule. Linda is not a lawyer can be inferred via the biconditional elimination rule.