Directions : Read the following information carefully to answer the questions given below:
i) There are six different books on different subjects P, Q, K, S, T and U.
These books are kept one above the other on a shelf. These books belong to six different persons — A, B, C, D, E and F. It is not necessary that the orders of these books and persons are the same.
ii) Only book of subject Q is kept between the books of subject P and T and only book of subject S is kept between books of subject P and U. The book of subject R is immediately above the book of subject T.
iii) C’s book is kept on the top. A does not have books on subjects T and S. The book on subject P belongs to F. The book on subject U belongs neither to B nor to A. D’s book is kept at the bottom.
The book on which of the following subjects is kept on the top ?