Given the task definition and input, reply with output. In this task, you will be shown a conversation and a question. You need to answer the question and choose the correct option based on the conversation. "W" and "M" in the conversations stand for "woman" and "man".

M: Ok, so what happened when you got to the airport? W: Well, I waited in a queue for ages and finally it was my turn to come up to the desk. I was asked to present a visa. M: Yes, you need a visa. Your travel agent should have told you. W: But I think I was there six years ago., Question: Why did the woman fail to catch the flight? (A) Her ticket was not confirmed. (B) She booked her ticket at the wrong place. (C) She didn't have the right documents.
(C) She didn't have the right documents.