For Mutual exclusion to prevail in the system ____________

A. At least one resource must be held in a non sharable mode

B. The processor must be a uniprocessor rather than a multiprocessor
C. There must be at least one resource in a sharable mode
D. All of the mentioned

Explanation: If another process requests that resource (non – shareable resource), the requesting process must be delayed until the resource has been released.

Occurrence: 0, System Administrator 2026