You have been asked to create three users， PUB1， PUB2 and PUB3， for three newly hired employees and to allocate unlimited quota on their default tablespace PUBLISHER_TBS with no other privileges. After creating the users， which method can you use for granting the required privileges？（）

A. grant CONNECT role to all of the three users

B. grant RESOURCE role to all of the three users

C. grant both CONNECT and RESOURCE role to all of the three users

D. execute ALTER USER .. QUOTA UNLIMITED ON publisher_tbs command for all of the three users

E. create role with UNLIMITED TABLESPACE system privilege and assign the role to all of the three users