48. There are more and more middle-aged adults who are returning to school either for their jobs or for their interests. (1) Going back to school not only helps adults work better in their jobs but also understand better the world around them. (2) There are also others who go back to classroom because of their interest in a new field, such as computer programming or foreign languages. (3) When they have better skills, there are more chances for them to get a raise. (4) They take courses offered in colleges to improve their job skills.
(A) 1342
(B) 1432
(C) 4321
(D) 4123