Which of the following is not true with respect to deadlock prevention and deadlock avoidance schemes?

A

In deadlock prevention, the request for resources is always granted if resulting state is safe

B

In deadlock avoidance, the request for resources is always granted, if the resulting state is safe

C

Deadlock avoidance requires knowledge of resource requirements a priori

D

Deadlock prevention is more restrictive than deadlock avoidance