GMAT OG2017 ds 389

haha93

A school administrator will assign each student in a group of n students to one of m classrooms.If 3 < m < 13 < n, is it possible to assign each of the n students to one of the m classrooms so that each classroom has the same number of students assigned to it?

(1)It is possible to assign each of 3n students to one of m classrooms so that each classroom has the same number of students assigned to it.

(2)It is possible to assign each of 13n students to one of m classrooms so that each classroom has the same number of students assigned to it.

请问各位大神，it is possible to do 怎么理解？ 如果理解为”有可能“ 只要一种情况成立即可，但是看答案（1）有些情况不满足所以排除，（2）全部满足，所以选B。各位大神可以解答一下吗？ 谢谢！