If 'CAT' is coded as '3120', 'DOG' is coded as '4157', what is the code for 'FISH'?

Answer: C. 61587
The code is derived from the position of each letter in the alphabet (C=3, A=1, T=20; D=4, O=15, G=7). For 'FISH', F=6, I=9, S=19, H=8 gives '61578'.