0|show" data-onresultcheck="*redo|*.na|hide@*correct|*.na|hide@*reset|*.na|hide"> A new study says students who attended for-profit private colleges in the United States to learn a trade saw their earnings drop. The report by the National Bureau of Economic Research said, on average, people who attended for-profit colleges made 1,500 more per year than they did before starting their studies, the report said. And, the report noted that about nine out of 10 students borrowed money to attend for-profit colleges. The average debt for people attending two-year for-profit colleges was $8,000. The report looked at schools preparing students for a number of trades, including health care, car repair and beauty treatment. Overall, researchers found that many students who attended for-profit schools made less money than they did before going to these colleges. They found lower pay and higher debt for people attending private, for-profit schools, compared to public colleges in all 50 U.S. states. 1. What is the news report mainly about?
A、The difficulty of for-profit colleges in attracting students.
B、The salaries for-profit private college graduates can earn.
C、The types of jobs taken by students from different colleges.
D、The costs of receiving college education for different degrees.