Study the following information to . answer the given question.
Twelve people are sitting in two parallel rows containing six people each, in such a way that there is an equal distance between adjacent persons. In row-1 M, N, O, Z, X and Y are seated and all of them are facing south. In row-2 P, Q, R, S, T and V are seated and all of them are facing north. Therefore, in the given seating arrangement each member seated in a row faces another member of the other row. Also any row's six members are related to each other in a family tree of three generation. There are two married couple in the family.
V sits third to right of S. S faces Z's sister and Z's sister does not sit at any of the extreme ends of the line. Z, who is the grandson of O, sits third to right of O. R faces M's wife. The one facing N's husband sits third to right of P. N and P do not sit at the extreme ends of the line. M is the father-in law of X. T is not an immediate neighbour of V and N's father is not an immediate neighbor of O, who has only one child who is a girl.
How many persons are sitting between Rand T?

Options

A. One
B. Four
C. Three
D. Two

Answer

D

Explanation

From the given conditions, first we try to complete blood relation tree from some given points.
Points are like as, Z.s sister, Z, who is the grandson of O. M.s wife, N.s husband. M is the father-in-law of X. N.s father. O, who has only one daughter. From those points we deduce the following blood relation tree.

From the other conditions we try to complete linear arrangement. V sits third to right of S. S faces Z.s sister and Z.s sister does not sit at any of the extreme ends of the line. R faces M.s wife. Hence R faces O. Z sits third right of O. Hence there are three possibilities for the position of O.

From the conditions, the one facing N.s husband sits third to right of P. N and P do not sit at the extreme ends of the line. So case-3 is eliminated. Case-1 and Case-2 is continued.

From the rest conditions, T is not an immediate neighbour of V and N.s father is not an immediate neighbor of O. Hence M is not immediate neighbour of O, so case-1 is eliminated. Case-2 is continued. N does not sit extreme end of the row, so final arrangement are