听力原文：We would like to remind passengers that this is a non-smoking facility. Please li

mit smoking to the designated areas located outside the terminal building. Under federal safety regulations, all bags are subject to search by security personnel. Please do not leave carry-on baggage unattended in the terminal building. If you see any unattended baggage, please report it to security or an airline service official immediately. The gate areas are for ticketed passengers only. Those awaiting arrivals may meet them at the shuttle train exit, located at the east end of the terminal, or at their flight' s designated baggage claim area. See the arrival board for flight numbers and corresponding carousel designations.

Where is the announcement being made？

A．At a train station.

B．At a bus station.

C．At an airport.

D．On a cruise ship.