Suppose that the following processes are running in parallel. Find two possible and one impossible output from {A, B, C) in length of 4. Semaphores A=0,B=1, C = 2 P1: P2: While (true) { wait (A); print ("A"); signal (C); While (true) { wait (B); print ("B"); wait (B); print ("B"); signal (A); } P3: While (true) { } wait (C); print ("C"); signal (B);