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 not an office clerk. It is late if and only if Barbara is an office clerk. Jessica is a carpenter if and only if Linda is a mechanic. Linda is a mechanic if and only if it is late.
If it is late, then Barbara is an office clerk can be inferred via the biconditional elimination rule. If Jessica were a carpenter, then Linda is a mechanic can be inferred via the biconditional elimination rule. If Linda were a mechanic, then it is late can be inferred via the biconditional elimination rule. If Barbara were an office clerk, then it is late can be inferred via the biconditional elimination rule. If Linda were a mechanic, then Jessica is a carpenter can be inferred via the biconditional elimination rule. If it is late, then Linda is a mechanic can be inferred via the biconditional elimination rule. It is not late can be inferred via the biconditional elimination rule.