Correct option is B
Given:
No father is a mother.
No mother is a son.

Conclusion (I): All mothers are fathers.
Conclusion (II): No father is a son.
From the given information, the arrangement will be.
For Conclusion (I): The statement clearly states "No father is a mother", which means the circle for fathers and the circle for mothers are entirely separate. Therefore, "All mothers are fathers" is completely false. Conclusion (I) does not follow.
For Conclusion (II): We know that the mother circle has no intersection with the father circle or the son circle. However, no direct restriction is given between the father circle and the son circle. It is entirely possible for the father circle and the son circle to overlap in a potential diagram. Since "No father is a son" is not true in all possible scenarios, it does not follow logically.
Therefore, neither conclusion follows.
Final Answer Statement:
Neither conclusion (I) nor (II) follows.
Conclusion:
Thus, the correct option is (B).