I said the word haberdashery in a sentence without giggling . It 's such a fun word . I had a weird dream with a face I had seen before , but ca n't place . I fell up the stairs , and skinned my knee .
According to the above context, choose the best option to answer the following question.
Question: Why did the narrator fall on the stairs ?
Options:
- The fell backwards   in their way up them .
 - They tripped forward while going up them .
 - They fell backwards while going down them .
 - None of the above choices .


They tripped forward while going up them .