Ali: I want to go on a holiday next week. Where should I go?
Zeynep: How about Cappadocia? You can take a hot-air balloon tour there.
Ali: That sounds exciting, but I prefer a seaside holiday.
Zeynep: Then, you should go to Antalya. It has beautiful beaches and ancient ruins.
According to the conversation above, why does Ali refuse Zeynep's first suggestion?
A)He thinks Cappadocia is too expensive.
B)He prefers a holiday by the sea.
C)He has already been to Cappadocia.
D)He does not like hot-air balloons.