In a mixed number coding system, 'FISH' is coded as 6, 9, 19, 8 and 'BIRD' is coded as 2, 9, 18, 4. What is the code for 'WORM'?

Answer: A. 23, 15, 18, 13
The letters correspond to their positions in the alphabet: 'W' is 23, 'O' is 15, 'R' is 18, 'M' is 13.