If \(A\) is brother of \(B, C\) is brother of \(B\), and \(A\) is brother of \(D\), then which of the following must be true?
Step-by-step Solution:
We can say \(A\) and \(C\) are male but we can not say anything about \(B\) and \(D\) so only choice (A) is definitely true.\[\]Choice (A)