登录到Mysql服务的命令是哪一个？（）

A.alter user ’root’@’localhost’identified with mysql_navite_password by ’修改的密码’
B.alter user ’root’@’localhost’identified by mysql_password with ’修改的密码’
C.alter user ’root’@’localhost’identified with mysql_password by ’修改的密码’
D.alter user ’root’@’localhost’identified by mysql_navite_password with ’修改的密码’

A.net mysql start
B.net start mysql
C.net mysql stop
D.net stop mysql