Each of the following is a valid conclusion that can be drawn from the information in the graph EXCEPT
A．the total revenue from tuition and government funding in 2000 was $120 million
B．between 1980 and 1990, the proportion of total revenue from overnment funding increased
C．revenue from government funding increased every year from 1950 to 2000
D．revenue from tuition increased every year from 1960 to 1990
E．revenue from tuition increased at a greater rate than revenue from government funding
参考答案：B
解析：According to the graph, it is apparent that revenue from government funding increased between 1980 and 1990. However, in 1980, revenue from government funding was greater than revenue from tuition, but in 1990 revenue from government funding was less than revenue from tuition. Thus, between 1980 and 1990, the proportion of total revenue that came from government funding decreased.