Study the following arrangement carefully and answer the question that follows below :
E 7 G B D M 4 N K H 2 A G Z S V 3 F I J L O Q 5 P R
If with the 1st, 12th, 15th, and 21st letters of the given arrangement, it is possible to make a meaningful word then which will be first letter of the word so formed? If no meaningful word can be formed then give X as the answer and if more than one word can be made then give M as the answer.
(A) A (B) T (C) M (D) X