Step 1: Compare MADRAS and NBESBT letter by letter: M to N, A to B, D to E, R to S, A to B, S to T.
Step 2: Each letter moves forward by exactly one place in the alphabet.
Step 3: Apply the same +1 shift to BOMBAY: B to C, O to P, M to N, B to C, A to B, Y to Z.
Step 4: This gives CPNCBZ, which is option 2.