In each of the following questions, find which one word cannot be made from the letters of the given word. TRIBUNAL

D. TRIBLE

If you pick up from the following alphabet, the sixth and the fourteenth letters from your right and then pick up the fifth and twentieth letters from your left and from a meaningful word, what is the first letter of that word ?
A  B  C  D  E  F  G  H  I  J  K  L  M
N  O  P  Q  R  S  T  U  V  W  X  Y  Z

A. M