If IMAGE and FIELD are coded as FHBNJ and EMFJG respectively then, which one…

Rule: Reverse the word, then replace each letter with the next letter in the alphabet (Z -> A).

Apply the rule to BEACH:

• Step 1: Reverse BEACH -> H C A E B

• Step 2: Shift each letter forward by one: H -> I, C -> D, A -> B, E -> F, B -> C

• Result: IDBFC

Check with the given examples to verify the rule:

• IMAGE -> reverse to E G A M I -> shift each forward -> F H B N J (matches the given encoding)

• FIELD -> reverse to D L E I F -> shift each forward -> E M F J G (matches the given encoding)

Conclusion: Applying the rule to BEACH produces IDBFC, so the correct coded form is IDBFC. The originally indicated answer CEADP is not consistent with this rule.