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: For all x_10, if x_10 drives a car, then x_10 is running. Patricia is a server if and only if Sarah is running. For all x_10, x_10 will not drive a car. For all x_10, if x_10 goes running, then x_10 is driving a car.
If Patricia were a server, then Sarah is running can be inferred via the biconditional elimination rule. If Sarah goes running, then Patricia is a server can be inferred via the biconditional elimination rule. For all x_10, x_10 will not go running can be inferred via the universal modus tollens rule. For all x_10, x_10 will drive a car if and only if x_10 will go running can be inferred via the universal biconditional introduction rule. For all x_10, x_10 will go running if and only if x_10 will drive a car can be inferred via the universal biconditional introduction rule.