
Passage: A research report shows that the proportion of children of cadres in Peking University has increased from 20% in the 1980s to nearly 40% in 1977, more than the children of workers, farmers and professional and technical personnel. They have become the largest source of students. According to this, some media believe that the proportion of children of cadres among Peking University students has been rising over the past 20 years, exceeding that of other classes.
Question: Which of the followings, if true, can best question the views of the above media?
A. A.Many of the cadres counted in the past 20 years are cadres of enterprises, which used to include only cadres of government organs.
B. B.Compared with foreign countries, education in China provides more opportunities for the children of the workers and farmers to receive education and social mobility.
C. C.After the founding of the people's Republic of China, more and more children of workers and farmers went to university.
D. D.According to statistics, some of the children of workers may be the children of former farmers.
Answer: