Write a program that generates 4 threads: two withdrawal threads that continue to withdraw $10 from a bank account and two depositing threads that continue to deposit $11 to the same account. Assume there is no limit on the maximum balance of the account but the withdrawal threads should block if the account does not have sufficient fund (i.e. less than $10) to withdraw. You should allow maximum currency for all threads, i.e., you do not unnecessarily synchronize threads and allow CPU switching after each depositing or each withdrawal. The mutex and synchronization variables should be cleaned up after each thread finishes its job.Make sure both threads will correctly work and synchronize on the account with maximum concurrency by checking the output messages