According to the passage, which of the following statements is NOT true?
A.
A college student can enrich his knowledge and broaden his mind through formal and informal learning.
B.
A college education is likely to be a required credential (文凭) for the career a person wants.
C.
A college student who doesn't work hard can get nothing out of the courses he takes.
D.
A college education tends to have long-range effects on a person's knowledge and values.