A、The length of the course. B、The route the cyclists take. C、The number of participants. D、The month in which the tour is held.

M: And now here is our guest Jane Thomas to tell us about the Montreal’s famous yearly island bicycle tour which is coming up in June. Good morning, Jane. What’s the bike tour all about?
W: Well, it’s an event that’s opened to anybody who’d like to ride a bicycle through the streets of Montreal. The tour covers a standard distance of 65 kilometers. But the route’s quite different every year. Even people who’ve already done it might enjoy doing it again.
M: How long does it take to go the whole distance?
W: It varies. Cyclists are free to go as fast or as slow and do as much or as little of the course as they like.
M: Well, what’s the typical pace for a participant?
W: Between 12 and 30 kilometers per hour. Some cyclists stop along the way and don’t cross the finish line until early evening. But the whole point is that there is no rush. It’s not a race.
M: I understand last year’s tour had 45,000 cyclists and it was the largest mass cycling event in the world. How many do you expect this year?
W: The same as last year. And since we regularly have so many participants, can I take this opportunity to remind our listeners to sign up early? We filled up quickly last year and we had to refuse lots of applications.
M: Before we close any other tips for all prospective cyclists?
W: Yes. Take water with you. It is available at the relay station. But it helps to have an additional supply. And pack a good lunch with plenty of fruit for energy. Candy and chocolate don’t do the trick.
Questions 13 to 15 are based on the conversation you have just heard.
13. What is the main subject of the conversation?
14. According to the woman, what is different every year?
15. What suggestions does the woman give to the participants?