What are some characteristics of data variables in SAP AppGyver? Note: There are 3 correct an-swers to this que-stion

What are some characteristics of data variables in SAP AppGyver? Note: There are 3 correct an-swers to this que-stion
A . They are always based on JSON data.
B . Their names must be copied exactly in a formula or field.
C . They are always wrapped in curly brackets { }.
D . They allow UI components to interact with data.
E . They are always created from data resources.

Answer: A,D,E