Read the following context and choose the best option to answer the question.
Context: My day got a rocky start when , at 12:30 am , the fire alarm in my building went off . Disoriented , I made my way to the parking lot with my roommates . We stood out there for only ten minutes , then came back inside and in ten minutes more , I was back sound asleep in my cozy bed .
Question: What caused the fire alarm to go off in the narrator 's building ?
Options: 
A. There was a small fire or cooking incident in another apartment .
B. The narrator 's roommate knocked over a candle .
C. The narrator fell asleep with a cigarette in their cozy bed .
D. None of the above choices .


A