Context: Before the cop could get off a shot , my friend lifted a rifle and fired a round right into the gas tank . The motorcycle burst into a fireball , of course - really great action movie stuff here , folks . Then my friend looked at me with a slight smile , an expression of deep care and affection that said , " I ' m here for you , Trevor .

Question: Why did the motorcycle blow up ?
Options:
0. A truck hit the gas tank .
1. The cop fired into it .
2. It got hit with a gun .
3. The cop blew it up .
Answer: 2

Question: Why did the motorcycle blow up ?
Options:
0. A truck hit the gas tank .
1. The cop blew it up .
2. The cop fired into it .
3. The narrator 's friend shot it .
Answer: 3