Why did the Creek tribe offer to sell its part of the Unassigned Lands?

A.
The tribe felt that the money would help improve the tribe’s living conditions.
B.
The tribe believed that settlers were bound to occupy those lands eventually.
C.
The tribe was under debt due to unpaid taxes on its lands.
D.
The tribe needed the money to build new schools and courthouses.
E.
The tribe felt that the new settlers would help to improve the tribe’s economy.