In the Business Model Canvas, the segments labeled A, D, and I correspond to Key Partners, Customer Relationships, and Revenue Streams, respectively. Segment A lists entities such as Product Manufacturers, National Suppliers, and Regional Suppliers, which are examples of Key Partners. Segment D mentions Personal Assistance and Warranty Service, which are ways the business interacts with and supports its customers, fitting the Customer Relationships category. Segment I includes Profit on Sales, Warranty Service, and Manufacturer Rebates, which are sources of income, clearly fitting the Revenue Streams category.