问题：
[单选题] Text 4 You might soon be able to sneak down to the cargo hold for a nap the next time you take an ultra-long fiight.That's the idea being fioated by plane manufacturer Airbus and seatmaker Zodiac Aero
A、Both the two companies don't have any detailed concepts.
B、There are lounge areas in some higher-end carriers.
C、Extra services may make the sleeping berth a better choice.
D、The lounge area is simply for a nap.
参考答案：
C、Extra services may make the sleeping berth a better choice.
● 参考解析
