In a petition for nullity filed in the Regional Trial Court, summons by publication was directed to be served in the United States because the defendant resided abroad. The order did not include service to the defendant's last known address. Is the RTC order proper?

• A. Yes, publication alone suffices for extraterritorial service.
• B. No, because extraterritorial service by publication must be accompanied by service to the last known address via registered mail.
• C. Yes, because the petition was properly served by publication.
• D. No, because summons must be personally served in the United States.

Answer: (B)