Where will credits for bulk items show up?

Credits for bulk items will show up in the route sales sheet/net billings because this document is designed to capture all transactions related to sales and returns on a specific delivery route for a given period. It provides a comprehensive overview of what items were sold, what bulk items were credited back to the inventory, and the net amount that is due or has been billed to the customer. This allows sales representatives to track the financial implications of bulk item transactions accurately.

The other options, such as the service support report, customer satisfaction survey, and delivery schedule, do not specifically focus on financial transactions or billing related to sales and credits, which is essential for tracking inventory and revenue accurately in a sales context. Hence, the route sales sheet/net billings is the appropriate choice for this information.