Some folks who live in the hills belong to the Hatfield clan; others belong to the McCoy clan.
No Hatfield can farm.
All McCoys can farm.
Therefore, McCoys are not Hatfields.
Everyone who is not Hatfield is a horseback rider.
Assume that each one of the above statements is true. Which of the following must be true if it is also true that no Hatfields ride horses.
A) The only people who can farm are horseback-riding McCoys
B) Anyone who does not belong to the McCoy clan belongs to the Hatfield clan.
C) All horseback riders can farm
D) All horseback riders must be McCoys
E) All McCoys are horseback riders.