单选题When using Form Based Authentication， which pair of fields must be used in the login form？（）Aj_user and j_idBj_id and j_passwordCj_users and j_passwordDj_user and j_passwordEj_login and j_passwordFj_username and j_password
题目
单选题
When using Form Based Authentication， which pair of fields must be used in the login form？（）
A
j_user and j_id
B
j_id and j_password
C
j_users and j_password
D
j_user and j_password
E
j_login and j_password
F
j_username and j_password