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: Linda is a cashier if and only if Thomas is fast. If Thomas were fast, then Linda is a cashier. Michael is curious if and only if Linda is a cashier. Thomas is not fast.
If Linda were a cashier, then Thomas is fast can be inferred via the biconditional elimination rule. If Michael were curious, then Linda is a cashier can be inferred via the biconditional elimination rule. If Thomas were fast, then Linda is a cashier can be inferred via the biconditional elimination rule. If Linda were a cashier, then Michael is curious can be inferred via the biconditional elimination rule. Linda is not a cashier can be inferred via the biconditional elimination rule.