Which statement(s) about Test-and-set solution for Critical Section Problem below isare TRUE? 1. It is deadlock-free II. It is starvation free III. It ensure processes enter CS in FIFO order IV. More than one process can enter CS at the same time without causing race condition problem. Select one: O A. IV only OB. I only OC II and III OD. I and II One of the functions of device manager is device deallocation. Which of the following(s) is(are) considered device deallocation functions performed by the device manager? 1. Handle device deallocation from a user process during waiting states during process execution. II. Taking away device from a process after a DMA controlled I/O operation completion. III. Implement disk scheduling during a data reading from a hard disk by a read/write head. IV. Process termination in a process scheduling operation. Select one: O A 1, II, III and IV OB. I and IV only OC I and II only OD. II and Ill only O E None