Where are the message definitions for the MessageManifest component defined?

Where are the message definitions for the MessageManifest component defined?
A . Within a Collection on the MessageManifest’s properties
B . Within a LookupTable component, acting as the MessageManifest’s data source
C . Within the Project Properties
D . Within the Interaction.xml file associated with the project

Answer: C

Explanation:

Reference: https://community1.pega.com/community/product-support/question/openspan-messagemanifest