
Passage: In our country, traffic compulsory insurance is the kind of insurance that insurance companies choose independently. Since its launch in 2006, only a small profit has been made in 2008, and losses have been recorded in other years, and the losses have increased year by year. In 2011, the actual operating loss of the national traffic insurance reached 9.2 billion yuan. Oddly enough, the current compulsory traffic insurance under huge losses is still the business that insurance companies compete for.
Question: If the following statements are true, which one best explains the strange phenomenon of insurance companies competing for compulsory insurance business?
A. A.In 2011, 3 of the 36 companies responsible for compulsory insurance made a profit on this type of insurance
B. B.In the compensation of traffic insurance, some vehicles pay too much, and some cases that should not be paid are awarded
C. C.Tractors enjoy the preferential agricultural policy, and many places register "transport vehicles" as "tractors", thus enjoying low tax rates
D. D.Commercial car insurance is very profitable, and car owners usually do not cover compulsory insurance and commercial car insurance separately
Answer: