['OMG .. I was so scared.  There was a ghost in my bedroom.', 'Surely, it was just your imagination.', 'I know this because A. I smelled roses  B. I got the chills   C. I felt someone touch my shoulder']
I can definitely see why all those things would scare you and make you think you saw a ghost.
OMG I was so scared.  There was a ghost in my bedroom.