What do you recommend as the standard approach?

Ethnic origin data is aUS centric dimension and NOT captured for all countries around the world. Your customer is a global company and needs you to recommend how to address this in the system .

What do you recommend as the standard approach?
A . Use a combination of logic and code mapping to display null values as Unallocated
B . Logic is not required, null values are automatically reported as Unallocated
C . Create a Level 1 node that groups data into two categories US and non-US
D . Use a combination of logic and code mapping to display null values as NOT Reported

Answer: D