收到USCIS的I-485, RFE原文如下：
Submit a copy of your birth certificate showing your parentage, which has been registered with the proper civil authorities of the country of your birth.
這句話有些搞不懂。我想大概有兩種理解：
1. Submit a copy of your birth certificate; the cetificate should show your parentage and also is issued by an agency that has been registered with the proper civil authorities of the country of your birth.
2. Submit a copy of your birth certificate that shows your parentage; and your parentage should has been registered with the proper civil authorities of the country of your birth.
應該是哪種呢？如果是前一種，我想提供國內市級公證處出示的出生公證書應該可以了。如果是後一種，難道還要提供父母的戶口或其他資料。或者還有其他理解？實在費解，望各位指教。
