Why is scientific training becoming less attractive to U. S. students？A．Because the U. S.

Why is scientific training becoming less attractive to U. S. students？

A．Because the U. S. students are unwilling to face the competitions between them and foreign students.

B．Because it is not so rewarding in this career path as before due to the increasing amount of students.

C．Because foreign students take up good position in this field for their advantage.

D．Because U. S. students do not think scientific training can help them make a lot of money.