Which of the following correctly explains the mutual-exclusion condition of deadlock prevention?

A) Resource deadlock can be prevented if no resource were ever assigned solely to a single process unless it is absolutely necessary.

B) Resource deadlock can be prevented if a process is entitled only to a single resource at any moment.

C)Resource deadlock can be prevented if we require all processes to request all their resources before stating execution

D) Resource deadlock can be prevented if resources can only be acquired in strictly increasing sequence.