There is a family of five members: K, L, M,N and O. Among them,there is one married couple. O is unmarried and is the brother of K. is the sister of O. M is the only married female and the mother of N. L and O arethe only males in the group.
Who is the father of K?
In the diagram, circle shows the female, square shows the male, vertical line son the generation, horizontal line shows the brother/sister and double horizontal lines show the couple.
From the diagram, L is the father of K.
$$\therefore$$ The correct answer is option B.
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