The correct answer is B. Production type. Relativity's official Production Data Source documentation states that when adding a production data source, one of the fields you configure is Production Type , where you select whether the data source will produce images, natives, or both . This is explicitly part of the production data source setup dialog.
This makes sense because production data sources are used to attach saved searches to a production set and can define how those specific subsets of documents should be produced. Relativity also documents that placeholders can be assigned at the production data source level so that different saved searches in the same production can use different placeholder behavior. However, Production Numbering is defined at the production set level rather than as a field you set when creating the individual production data source.
Likewise, Branding text size and Placeholder image format are production-level settings, not the core field identified in the data source setup described by Relativity.
From an RCA standpoint, this distinction matters because administrators configure overall production behavior in the production set, while more granular document-source behavior is controlled on each production data source. Therefore, the correct answer is B. Production type .