48 Which is one of the factors that contributed to the rapid growth of community colleges in the United States? (A) It is a major new trend to include as many rural students as possible. (B) The purpose is to handle the explosive growth of K–12 education. (C) Parents and businessmen wanted nearby, low-cost schools in rural or small-town areas to provide training for the growing white-collar labor force. (D) Many community colleges were located in the center of the fast-growing metropolis to provide more advanced technical jobs in the blue-collar sphere.