Select the option that is related to the third letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster.

RAMP : IZNK :: CEILING : ?

XVRORMT

1   2    3    4   5    6   7     8    9  10  11  12  13

 A   B   C    D   E    F   G    H    I    J    K    L   M

 ↓    ↓    ↓    ↓    ↓     ↓   ↓    ↓     ↓   ↓    ↓    ↓    ↓

 Z   Y    X   W   V    U   T    S    R   Q   P    O   N

26  25  24  23  22  21  20  19  18  17  16  15  14

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THE LOGIC FOLLOWED HERE IS:

LETTERS ARE CODED BY THEIR  REVERSE LETTER

AS

R → (OPPOSITE) → I

A →  (OPPOSITE) → Z

M →  (OPPOSITE) → N

P →  (OPPOSITE) → K

SIMILARLY

C → (OPPOSITE) → X

E →  (OPPOSITE) → V

I  →  (OPPOSITE) → R

L →  (OPPOSITE) → O

I →  (OPPOSITE) → R

N →  (OPPOSITE) → M

G →  (OPPOSITE) → T