According to this text__________. 查看材料A.the careers

According to this text__________. 查看材料

A.the careers unattractive to U. S. students may not be so to foreign students

B.science and engineering careers are unattractive exclusively to U．S．students

C.U．S．students age not courageous enough to face foreign competition

D.U．S．students are not well prepared to compete with foreign students

请帮忙给出正确答案和分析，谢谢！