Concept:In this code, each letter is replaced by the letter that comes immediately before it in the English alphabet.Explanation:Check the given example: M→L, A→Z, D→C, R→Q, A→Z, S→R.So, MADRAS is coded as LZCQZR.The same rule is followed in DELHI→CDKGH: each letter moves one step backward.Now apply this rule to BOMBAY:B→A, O→N, M→L, B→A, A→Z, Y→X.So, BOMBAY is coded as ANLAZX.Answer:Option A: ANLAZX