You are using a Language Understanding service to handle natural language input from the users of a web-based customer agent. The users report that the agent frequently responds with the following generic response: "Sorry, I don't understand that." You need to improve the ability of the agent to respond to requests. Which three actions should you perform in sequence? ACTIONS Add prebuilt domain models as required. Validate the utterances logged for review and modify the model. Migrate authoring to an Azure resource authoring key. Enable active learning. Enable log collection by using Log Analytics. Train and republish the Language Understanding model.