A classical synchronization problem is an analogy of a single-lane tunnel, also known as the single-lane east-west bridge. To avoid a deadlock, cars must be prevented from entering the tunnel at both ends simultaneously. Once a car enters, other cars from the same direction may follow immediately.(a)Ignoring the problem of starvation, solve the problem using semaphores. Hint: The tunnel problem is a variation of the readers/writers problem where multiple readers or multiple writers are allowed to enter the critical region.