A customer needs to create a promotion level report that has data for three Promotion...

While Salesforce Lightning Reports (Option C) are excellent for standard object data (Name, Slogan, Phase), they struggle to access the calculated KPIs (Volume, ROI, Spend) that reside in the Processing Service's memory or JSON blobs, unless those KPIs are explicitly written back to the database. Even with writeback, joining them in a formatted "Promotion Level Report" (often implying a tear-sheet or printable summary) can be rigid.

Real-Time Reporting (RTR)(Option A) is a UI component forviewingdata on a screen, not generating a persistent "Report" document.

Therefore, for a requirement that mixes standard metadata (Slogan, Phase) with complex calculated KPIs into a cohesive report, the recommended best practice in the TPM ecosystem is often anExternal Reporting Solution(Option B) such as CRM Analytics (Tableau CRM) or a third-party generator. These tools can ingest the Writeback data (or query the API), join it with the Promotion Object metadata, and render the pixel-perfect layout required by the customer3.