Which of the following specialties and programs was the least possibly available in American colleges and universi ties 40 years ago

A．A general survey of American colleges and universities.
B．The main causes for the development of American higher education.
C．The historical development of American colleges and universities.
D．The higher education, the better living condition.

A．did not receive enough high-school education
B．received a level of education which is almost equivalent to that of today's college
C．received a level of education high enough for most occupations 40 years ago
D．who received only high-school education are not qualified for such professional work as ministers, doctors or lawyers