Students Who Go to College When They Are Younger Face

Students who go to college when they are younger face a lower opportunity cost of education because

A) wages are lower for younger people, so they are giving up less in earnings when they spend time in school.
B) younger people are willing to live at a lower standard of living with less expensive housing and other goods.
C) younger people find it easier to learn, so going to college does not take as much effort as it does for someone who is older.
D) younger people can borrow money for college, and older people cannot.