A single-lane bridge connects the two Vermont villages of North Tunbridge and South Tunbridge. Farmers in the two villages use this bridge to deliver their produce to the neighboring town. The bridge can become deadlocked if a northbound and a southbound farmer get on the bridge at the same time. (Vermont farmers are stubborn and are unable to back up.) "Implement a solution using Pthreads" that synchronizes the threads access to the output screen and prevents deadlock. In particular, represent northbound and southbound farmers as separate threads (use several threads representing the northbound and southbound farmers). Once a farmer is on the bridge the associated thread will: