What Do Both GPS and GIS Use

What do both GPS and GIS use?

A) the geographic location of features and boundaries on Earth, such as natural or constructed features, oceans, and more
B) business assets linked to a centralized system where they can be tracked and monitored over time
C) a coding process that assigns a digital map feature to an attribute that serves as a unique ID (tract number, node number) or classification (soil type, zoning category)
D) location-based services (LBS) applications that use location information to provide a service