You are the DBA for an academic databasE.You need to create a role that allows a group of users to modify existing rows in the STUDENT_GRADES tablE.Which set of statements accomplishes this? （）
A.CREATE ROLL registrar; GRANT MODIFY ON student_grant TO registrar; GRANT registrar to user 1, user2, user3
B.CREATE NEW ROLE registrar; GRANT ALL ON student_grant TO registrar; GRANT registrar to user 1, user2, user3
C.CREATE ROLL registrar; GRANT UPDATE ON student_grant TO registrar; GRANT ROLE to user1, user2, user3
D.CREATE ROLL registrar; GRANT UPDATE ON student_grant TO registrar; GRANT registrar to user 1, user2, user3;
E.CREATE registrar; GRANT CHANGE ON student_grant TO registrar; GRANT registrar;