听力原文：Hello, I was once a hostess. Now I am on my lust bus trip and I'm quite surprised

听力原文： Hello, I was once a hostess. Now I am on my lust bus trip and I'm quite surprised at the services offered during the trip. The services they offered includes meals on the way, rest rooms and public address announcements. The bus hostess is a beautiful and kind girl. I introduced myself to her, and we told each other about experience on air and ground travel.

At lunch time, she gave out menus offering a choice of sandwiches. As she started filling orders, she found that there weren't enough egg salad sandwiches. She quickly went to whisper to the driver. The bus soon stopped. The hostess ran to another bus that was all the time following ours and she soon returned with a box of egg salad sandwiches. As she passed my seat, she asked," Could you do that on a plane？ ....No, we couldn't. "I answered. I also told her that I was very satisfied with the service on the bus.

I always think the service on a plane is better than any other services on train or bus, but the experience made me know that it's not the case. Whether the service is good or not depends on the attitude of the hostess.

According to this passage, what kind of vehicle did the speaker always ride in the past？

A．By bus.

B．By air.

C．By train.