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? | Oracle

A. CREATE ROLE registrar; GRANT MODIFY ON student_grades TO registrar; GRANT registrar to user1, user2, user3
B. CREATE NEW ROLE registrar; GRANT ALL ON student_grades TO registrar; GRANT registrar to user1, user2, user3
C. CREATE ROLE registrar; GRANT UPDATE ON student_grades TO registrar; GRANT ROLE registrar to user1, user2, user3
D. CREATE ROLE registrar; GRANT UPDATE ON student_grades TO registrar; GRANT registrar to user1, user2, user3;
E. E. CREATE registrar; GRANT CHANGE ON student_grades TO registrar; GRANT registrar;

Ans: D