[单项选择]

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For an increasing number of students at American universities, {{U}}Old is suddenly in{{/U}}. The reason is obvious: the graying of America means jobs. Coupled with the aging of the babyboom generation, a longer life span means that the nation’s elderly population is bound to expand significantly over the next 50 years. By 2050, 25 percent of all Americans will be older than 65, up from 14 percent in 1995. The change poses profound questions for government and society, of course. But it also creates career opportunities in medicine and health professions, and in law and business as well. "In addition to the doctors, we’re going to need more sociologists, biologists, urban planners and specialized lawyers," says Professor Edward Schneider of the University of Southern California’s (USC) School of Gerontology.
Lawyers can specialize in "elder law," which covers everything from trusts and estates to nursing-home
A. America has suddenly become a nation of old people
B. gerontology has suddenly become popular
C. more elderly professors are found on American campuses
D. American colleges have realized the need of enrolling older students

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