You have an Azure subscription that contains an Azure Stream Analytics job named Job1. You need to monitor input events for Job1 to identify the number of event...

You have an Azure subscription that contains an Azure Stream Analytics job named Job1.
You need to monitor input events for Job1 to identify the number of events that were NOT processed.
Which metric should you use?

A. Out-of-Order Events B. Output Events C. Late Input Events D. Backlogged Input Events