Vietnam carried out an intensive training program for its athletes, but the results were not as high as expected.

A. There is no expectation for Vietnamese athletes to win due to lack of  training.

B. Whereas Vietnamese athletes were intensively trained, their performance was below expectation.

C. Vietnamese athletes were intensively trained carefully, and they won all the matches.

D. It might not be possible for Vietnamese athletes to get good results because their training was not careful.