In a coding scheme, 'FISH' is represented as 6, 9, 19, 8 and 'WATER' is represented as 23, 1, 20, 5, 18. What is the code for 'RIVER'?

Answer: A. 18, 9, 22, 5, 18
The code for 'RIVER' follows the established numerical pattern, leading to option a.