Correct option is B
Given:
Some horses are not lions.
All horses are brown.
Conclusion (I): Some lions are brown.
Conclusion (II): Some horses being lion is a possibility.

From the given information seating arrangement will be.
Conclusion (I): While all horses are brown and some of those horses are not lions, there is no statement that forces lions to intersect with the brown category. Therefore, "Some lions are brown" is a possibility but not a definite conclusion.
Conclusion (II): The statement "Some horses are not lions" (O-type) implies that at least a portion of horses is outside the lion circle. However, it does not prohibit another portion of horses from being lions. Therefore, the possibility that some horses are lions exists.
Only Conclusion (II) follows.
(Only conclusion II follows).