Let us start with the first option. Option A: J X T + R means that J is the brother of T who is the mother of R. The gender of R cannot be determined ( R can be nephew/niece). Option B: K X R - J means that K is the brother of R who is the sister of J. All three of them are siblings. Option C: J X T + R $$div$$ K means that J is the brother of T. T is the mother of R. R is the father of K. Hence, J is the uncle of R. But the question asks whether J is the nephew of R. Option D: J X T - R means that J is the brother of R. hence, the required relationship is not obtained. Therefore, the correct answer is option E - none of the above.