Ranking Set 3 Sororities for Preference Night

[PurdueKiddo]

My friend has another question. The school goes from 6 parties tonight to 3 tomorrow night. When the girls rank the sororities tonight after the parties will they rank 3 choices or 6 choices. Call them sororities A,B,C,D,E,F

She loves Sorority A
She likes Sorority B
She kinda likes Sorority C
She might consider Sorority D
She doesn't fit into Sororities E and F.

She has rated Sororities E and F low previously and did not understand why she was asked back.

So if she needs to rank 3 but she is unsure about Sorority C should she put it on the list.

If she needs to rank 6, how does she eliminate sororities E and F.

Thanks