What are three methods to reduce Mysql server exposure to remote connections?（）

A、A.Setting — skip-networking when remote connections are not required

B、B.Using the sql_mode=STRICT_SECURE after connections are established for encrypted communications

C、C.Setting specific GRANT privilege to limit remote authentication

D、D.Setting – mysql_secure_configuration to enable paranoid mode

E、E.Using SSL when transporting data over remote networks