问题详情

If the total enrollment in institutions of higher education in 1972 was 5,000,000. approximately how many students were enrolled in private 4-year institutions in 1995？
A．1,000,000
B．1,100,000
C．1,250,000
D．1,500,000
E．1,650,000请帮忙给出正确答案和分析，谢谢！