Q. Consider the code for three processes shown below. The code attempts to ensure that only one process at a time is in critical sections A and B using the semaphore mutex. What is the problem with the code?

Process 1 { . . . mutex.acquire() //Critical section A mutex.release() . . . }

Process 2{ . . . mutex.acquire() //Critical section B mutex.release() . . .

Process 3{ . . . mutex.release() mutex.acquire() . . . }