Marcelo is an IoT developer who is working on a Fleet Management system. The platform uses several functions like GeoJSON point for distance measurement, co-ordinate mapping, and function like Polygon for the development of the fleet management system with Azure IoT and Stream Analytics. 
He used Stream analytics for complex event processing streams, which ingests data from IoT edge to IoT hub, followed by stream analytics processing engine. 
Which type of function in Stream analytics can he choose for executing the functions like GeoJSON points, Polygon, etc.?

Answer options:

A.Windowing functions
B.Checkpoint
C.Geospatial functions
D.User-defined functions

Correct Answer: C 

https://docs.microsoft.com/en-us/azure/stream-analytics/stream-analytics-geospatial-functions