In a mixed number coding system, 'FISH' is coded as 23, 18, 15, 12 and 'BIRD' is coded as 10, 15, 18, 14. What is the code for 'COLD'?

Answer: A. 12, 15, 18, 20
The code for each letter follows a consistent pattern, and 'COLD' corresponds to 12, 15, 18, 20.