Reading Comprehension (RC) | Re: In Winters v. United States (1908), the Supreme Court held that the ri

Thanks GMATNinja

I got the below question wrong. Can you help to explain this question?

Q9: The passage suggests that, if the criteria discussed in lines 16 – 32 were the only criteria for establishing a reservation’s water rights, which of the following would be true?
A. The water rights of the inhabitants of the Fort Berthold Indian Reservation would not take precedence over those of other citizens.
B. Reservations established before 1848 would be judged to have no water rights.
C. There