Read the following context and choose the best option to answer the question.
Context: I ' m not a monster , if that is what you all think . I did not take a perverse pleasure at firing a weapon at a man . All I can think about is who he was .
Question: Why is the narrator rationalizing firing a weapon ?
Options: 
- They likely guilt over the ambush .
 - They likely feel perverse .
 - They likely feel like a monster .
 - They likely feel pleasure .


They likely guilt over the ambush .