Seven letters are arranged to form a meaningful word. Only two letters are placed between E and A. P is two places to the right of E. A is two places to the left of R. As many letters are there to the left of D as to the right of R. S is placed to the left of I. Now, if only one meaningful word is formed then, which letter is fifth letter from the left end of the newly formed word. If no meaningful word is formed, mark X as your answer, and if more than one such word is formed, mark Y as your answer?