You are building an industrial IoT solution where, using several S1 IoT hubs, you collect telemetry data from a number of field sensors. The data collected by the IoT hubs must be forwarded to a Blob Storage container and to be published to a Service Bus topic to make them available to consumer services. Each forwarded message needs to be stamped with the location of the device ($twin.tags.location). You need to configure the enrichments and the messages routes. 
Which items are you recommended to configure?

Answer options:

A.Two messages/events endpoints and one enrichment
B.Two built-in endpoints and two enrichments
C.Two custom endpoints and two enrichments
D.Two custom endpoints and one enrichment

Correct Answer: D
Option A is incorrect because the messages/events is the default, built-in endpoint of the IoT hub. For the given scenario, custom endpoints for Storage and Service Bus should be used.
Option B is incorrect because the Storage Container and the Service Bus are custom endpoints. You can’t configure them as built-in endpoints.
Option C is incorrect because while it is a valid option,the number of enrichments is limited to 10 per IoT hub, it is recommended to optimize their number where possible. For this scenario, the same enrichment applies to both endpoints, hence one single enrichment does the job.
Option D is CORRECT because both of the targets (Storage and Service Bus) are defined as custom endpoints. Both of them need to be created beforehand, and then the messages forwarded to them can be stamped in one single enrichment. Because the number of enrichments is limited to 10 per IoT hub, it is the best solution to optimize their number where possible.
Diagram: 

References: 

https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-message-enrichments-overview
https://docs.microsoft.com/en-us/azure/iot-hub/tutorial-message-enrichments