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 .

Question with options to choose from: Why did the narrator fall on the stairs ?
Select from: a). The fell backwards in their way up them .; b). They tripped forward while going up them .; c). They fell backwards while going down them .; d). None of the above choices .;
b).