A is the brother of B. B is the brother of C. D is the father of A. Based on these three satatements, which of the following statements cannot be definitely true ?
Option:
A. B is the brother of A.
B. B is the son of D.
C. A is the brother of C.
D. C is the brother of A.
E. A, B and C are D's children.
Answer: D . C is the brother of A.
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Justification:
A is the brother of B and B is the brother of C. So, C may be the brother or sister of A.
