Direction: Study the given information carefully and answer the following questions.
There are 9 persons – P, Q, R, S, T, U, V, W and X had exams on dates 9, 14 and 23 of each month - March, April and May but not necessarily in the same order. Each person had only one exam on one day and had different scores 16, 19, 21, 8, and 9 but not necessarily in the same order.
The one who had an exam on even number date scored 21. The one who had exam in march had a score of 8. P had exam on 23. T scored two times that of W but not in the same month. Q had exam on even number month. V’s exam was not in May. Neither X nor W had exam in March. R had exam on 14 and had a score equal to the square of month number. S had exam on even date and in even month. T had exam on prime date and in prime number month. W had scored 6 marks less than the date of exam. One of the person who had exam on 23 had a nprime score. The one who had exam earlier than S had scored 5 marks more than its month number. X had scored same as sum of T`s score and X's month number. The one who had exam after W had scored 2 times that of W. U had exam on date such that it is the square of earlier month number.
Which person has exam on 9th May?

Options

A. P
B. X
C. W
D. U