In the following process state transition diagram for a uniprocessor system, assume that there are always some processes in the ready state:
Now consider the following statements:
I. If a process makes a transition D, it would result in another process making transition A immediately.
II. A process P2 in blocked state can make transition E while another process P1 is in running state.
III. The OS uses preemptive scheduling.
IV. The OS uses non-preemptive scheduling.
Which of the above statements are TRUE?
(A) I and II (B) I and III (C) II and III (D) II and IV