请问， 给父母办移民，填I-864 (Affidavit of support) 时，是把

我母亲填成我父亲 (principal immigrant) 的 family member, 还是单独给钱我母亲也填一份I-864,把她也填成 principal immigrant 呢？ 因为我给父母各自都提交了I-485.

I-864 是这样的：

8. I am sponsoring the principal immigrant named in part 2 (my father) above

yes (x)

9 I am sponsoring the following family members immigrating at the same time or within six months of the principal immigrant named in part 2 above. Do not include any relative listed on a separate visa petition.

yes (x) or do not mark?

should I list my mother's name in the followed blank?

先谢谢了。