A、The boy’s association. B、The girl’s competition. C、The trip to Beijing. D、The trip to Guilin. DWhat is the conversation about?

M: Lily, are you interested in traveling?
W: Yes, why?
M: The school Travel Association is planning for a trip to Guilin.
W: Oh, Guilin is a beautiful place.
M: Do you like to join us?
W: When will you set out?
M: We are thinking of the National Day Holiday. Will you be free then?
W: Unfortunately, I’ll take part in the 3rd Spoken English Competition in Beijing at that time.
M: Oh, what a pity! Hope you a success in your competition.
W. Thank you. I’ll try my best.