Process 1, Process 2, Process 3 and Process 4 must start their execution after execution of Process 0 ends. There is no enforcement of order between the executions of Process 1, Process 2, Process3 and Process 4. Implement the required synchronization using minimum number of binary semaphores. a) Give the initial value of each semaphore. b) Implement the required synchronization using minimum number of counting semaphores. Give the initial value of each semaphore. P1 P. P2 A P3 P4