I'm reading Intermediate Comprehension Passages, page 1. In the following passage,
It was already late when we set out for the next town, which according to the map was about fifteen miles away on the other side of the hills. There we felt sure that we would find a bed for the night. Darkness fell soon after we left the village, but luckily we met no one as we drove swiftly along the narrow winding road that led to the hills. As we climbed higher, it became colder and rain began to fall, making it difficult at times to see the road. I asked John, my companion, to drive more slowly. After we had travelled for about twenty miles, there was still no sign of the town which was marked on the map. We were beginning to get worried.
There is a tricky question which is
The travellers had a map but
1- they did not know how to use it.
2- it gave them the wrong information.
3- they could not see it very well in the dark.
4- the town they were looking for was not clearly marked.
Three and four are clearly not the best answers. To my understanding, since there is no clue about anything wrong with the map, I've chosen the first one as a best answer that fits the context. However, at the end of the book, the story is paraphrased and clearly states that the second option is the best answer. My question is why the second option is the best answer? Which clue(s) I can use to support my answer. Thank you.