The pilot said, Please don t panic but tighten your seat belts.

• A. The pilot told to the passengers that they should not panic but tighten the seat belts.
• B. The pilot told the passengers to not panic but to tighten their seat belts instead.
• C. The pilot told the passengers not to panic but to tighten your seat belts.
• D. The pilot told the passengers not to panic but to tighten their seat belts.