A bus line has 12 stops on a straight street. The distance between two consecutive stops is always the same. It is known that the distance between the third and the sixth stops is 3300 meters. What is the distance, in kilometers, between the first and the last stop?
(a) 8.4
(b) 12.1
(c) 9.9
(d) 13.2
(e) 9.075
The correct option is (b).

Since the distance between the third and the sixth stops is $3300 \mathrm{~m}$, the distance between two consecutive stops is $3300 \div 3=1100 \mathrm{~m}$. Therefore, the distance between the first and the last stops is $1100 \times 11=12100$ meters, that is, 12.1 kilometers.