If the code for 'CAT' is 12, 15, 18 and the code for 'DOG' is 14, 17, 20, what is the code for 'BIRD'?
Answer: A. 10, 13, 16, 19
The pattern shows that each letter's position in the alphabet is increased by a certain number. Following the same pattern for 'BIRD', the code corresponds to option a.