Based on the context and the answer, generate a question. 

Context: I was asked this morning about the origin of our guests onboard the Rocky Mountaineer . A quick look at our guests bookings for 2008 shows representation from 18 countries around the world . I would expect that we will exceed 25 countries in 6 months time .

Answer:

None of the above choices .



Guests from how many different countries are expected to have visited at the end of the next 6 months ?