In a coding system, 'FISH' is represented as '614891'. What is the code for 'BIRD' if 'B' is 2, 'I' is 9, 'R' is 18, and 'D' is 4?

Answer: A. 29184
The code for 'BIRD' is formed by concatenating the values of B, I, R, and D: 2, 9, 18, and 4, resulting in '29184'.