acually TRY i'm giving you 100 points to get this correct dont let me down please hurry!!! (and yes i am very desperate for a right answer thxs)

What requirements did settlers have to meet to keep their claims? CHECK ALL BOXES THAT APPLY

A) Settlers had to promise to avoid contact with American Indian tribal lands.
B) Settlers had to be twenty-one years old or the head of a family.
C) Settlers had to be US citizens or have filed for US citizenship.
D) Settlers had to improve the land (e. g., by building a house) to keep it.