Read the following context and choose the best option to answer the question.
Context: But then they slid a plastic tube in and the needle it and it was fine . They said I would feel cold going up my arm , but I never did . I remember the doctor telling me I would start seeing the walls move a little , but I was n't .
Question: What may be the reason the doctor said you would start seeing the walls move a little ?
Options: 
A. The medicine in the needle gives you superpowers .
B. The medicine in the needle causes hallucinations .
C. None of the above choices .
D. The medicine causes you to see walls moving closer .


B