Which of the following statement is False about deadlock detection policies?

I. Wait-die scheme is a non-preemptive technique while wound-wait scheme is a preemptive technique for deadlock prevention.

II. If Ti requests a lock held by Tj and Ti is older than Tj then in wait-die scheme Ti will wait and in wound-wait scheme Tj will wait.

III There is deadlock in the system if and only if there exists a cycle in the wait-for-graph.