Why did the Medicine Lodge Creek Treaty fail to bring peace to West Texas?

A. Native Americans protested the sale of weapons on reservations.

B. Supporters of the treaty face discrimination in their own communities.

C. The United States government and Native Americans both refused to fully carry it out.

D. The United States government prevented its military from entering reservations.

After doing a quick research on one article about "Medicine Lodge Peace Treaty ", we can come to the conclusion that the correct answer:

Option C: The United States government and Native Americans both refused to fully carry it out.

There were many attacks from the natives so that whites settlers could not enter. The whites retreated, returning later with a military expedition. There was no agreement between both parts, white settlers and indian tribes.