The result of the Census Bureau's survey seems to be ______.

A．students Who actually regard higher education as an investment
B．students who can't afford the money to go to college or university
C．students who can't go to college because they have failed in the college entrance examination
D．students who don' t know whether higher education can have great influence on their earnings

A．higher-degree-holders are surely going to make more money
B．college graduates in different majors usually get paid differently
C．a master's degree-holder in social work will surely make more money than a bachelor' s degree-holder in computer science
D．if one wants to earn $ 4.4 million, he or she has to try to get a professional degree such as a doctor or lawyer