Which statement best describes British alliances with American Indians in the Louisiana Territory?

Britain attempted to turn American Indian tribes with whom they formed agreements against other tribes to make it easier to take their lands.
Britain formed agreements to cooperate with American Indian tribes and protected American Indian lands from white settlers.
Britain signed treaties with American Indian tribes to guarantee their rights to trade up and down the Mississippi River.
Britain gave weapons to American Indian tribes to help them fight against the French and Spanish.