Which file is referred to as the App Descriptor and what is its function?

Which file is referred to as the App Descriptor and what is its function?
A . The configure.xml file is referred to as App Descriptor Its function is to configure web apps and turn on ^ plug-ins
B . The neo.json file is referred to as App Descriptor Its function is to capture data from objects
C . The manifest.json file is referred to as App Descriptor Its function is to instantiate the model
D . The config-json file is referred to as App Descriptor Its function is to configure ports and turn on plug-ins

Answer: C