但我想坚持跟他们说,可以只挑选A和B区间中的任意一个,
但数量一定要200个,如果挑选的数量低于200的话,
我担心会涵盖不到全部的问题点
Yet I'd like to make them understand,
picking any one in the range of A to B is acceptable,
but make sure the quantity should be over 200,
if not, I'm afraid it cannot cover all the problems.
But I would like to insist: any one can be chosen in Section A and Section B; but quantity should be at least 200. I am concerned that quantity less than 200 will not be able to cover all of the trouble points.