I think this is based on your opinion rather than facts so you can use what you know to give your OWN opinion シ
I believe that the correct answer is C because that literally shows it, but it also could be A because that is a more accurate detail that she actually missed it, and that it wasn't just a random bus. But, I think it is most likely A because C is just imagery. Hope this clarified it a little bit!
Answer:
Letter c
Explanation:
Just took the test and got it right