E and I, there are 3 letters skipped (D, F, G).
Between I and M, there are 5 letters skipped (J, K, L, M, N).
Between M and Q, there are 3 letters skipped (O, P, R).
Why other options are incorrect:
(A) BDHLR:
Between B and D, there are 1 letter skipped (C).
Between D and H, there are 3 letters skipped (E, F, G).
Between H and L, there are 3 letters skipped (I, J, K).
Between L and R, there are 5 letters skipped (M, N, O, P, Q).
(B) FIMRX:
Between F and I, there are 2 letters skipped (G, H).
Between I and M, there are 4 letters skipped (J, K, L, M).
Between M and R, there are 4 letters skipped (N, O, P, Q).
(D) MPRUX:
Between M and P, there are 2 letters skipped (N, O).
Between P and R, there are 2 letters skipped (Q, S).
Between R and U, there are 4 letters skipped (S, T, U, V).