Please explain well

2. B/P C/P* DIP Above is a grant diagram involving users privilege P. Suppose A executes A through D and a single REVOKE P FROM B CASCADE Compute the resulting grant diagram. Then, tell which of the following is a consequence of the revocation? a) The revocation is rejected by the system, and all privileges remain as they were b) B.C, and D all retain privilege P, but without the grant option. c) B, C, and D no longer have privilege P, but A does. d) The revocation is accepted by the system, but neither B, C, nor D lose privilege P