In a certain code, 'HELLO' is coded as 8-5-12-12-15 and 'WORLD' is coded as 23-15-18-12-4. What is the code for 'GOOD'?

Answer: A. 7-15-15-4
Each letter corresponds to its position in the alphabet. 'G' is 7, 'O' is 15, 'O' is 15, 'D' is 4.