How is the Conversation preference data type sourced?

An on-demand transportation application has a Conversation preference data type. When customers use the application a ride, they can specify their conversation preference: whether they would like to talk to their driver or if they would prefer silence. Company stakeholder are interested in analyzing the conversation the performance data.

How is the Conversation preference data type sourced?
A . No system of record
B . External system of record
C . Local system of record

Answer: A