What should a Community Cloud consultant suggest as a method of implementation?

Universal Containers uses a third-party billing system for storing invoice records and wants to show these records on its Salesforce Partner Community.

What should a Community Cloud consultant suggest as a method of implementation? Select one or more of the following:
A . Configure Salesforce Connect and define the required external objects
B . Create a custom lightning component to display the information in an iframe
C . Configure Files Connect and include the external object in the global search
D . Used the standard files component and define the third-party billing system as a source

Answer: C