修改数据库登录密码的命令是哪一个？（）

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’