While rushing to answer the door yesterday , I slammed my noggin into the edge of a bookcase . It sounded like a gunshot to me , and V said it was pretty loud from the other room . There was n't much bleeding , and there 's only been a little swelling .
According to the above context, choose the best option to answer the following question.
Question: What injury is the narrator likely to suffer in lieu of these events ?
Options:
- They are likely to have a concussion .
 - They are likely to have a broken leg .
 - They are likely to have a broken ankle .
 - They are likely to have a broken arm .


They are likely to have a concussion .