求助一道数学题目！！！

allenxiangyu

For a certain race, 3 teams were allowed to enter 3 members each.  A team earned 6 – n points whenever one of its members finished in nth place, where 1 ≤ n ≤ 5.  There were no ties, disqualifications, or
        withdrawals.  If no team earned more than 6 points, what is the least possible score a team could have earned?

 

A.    0

B.    1

C.    2

D.    3

E.    4

Answer: d

怎么做啊 ？？

allenxiangyu

希望高手解答！自己顶！

allenxiangyu

谢谢啦！终于弄明白了！