You are building a Language Understanding model for an e-commerce business. You need to ensure that the model detects when utterances are outside the intended scope of the model. What should you do? 

Answer options:

A. Test the model by using new utterances
B. Add utterances to the None intent
C. Create a prebuilt task entity
D. Create a new model

B

The None intent is filled with utterances that are outside of your domain. Reference: https://docs.microsoft.com/en-us/azure/cognitive-services/LUIS/luis-concept-intent