哪个语句会为现有的本地 MySQL root 账户设置密码 4nM1ruJNqL1D？
root
4nM1ruJNqL1D
ALTER USER 'root'@'localhost' IDENTIFIED BY '4nM1ruJNqL1D';
CREATE USER 'root'@'localhost' IDENTIFIED BY '4nM1ruJNqL1D';
GRANT SELECT ON *.* TO 'root'@'localhost';
DROP USER 'root'@'localhost';