Which of the following is the normal channel by which the commodities reach the final consumer?

• A Mnaufacturer-wholesale-agent retailer-consumer
• B Mnufacturer-wholesale-retailer-consumer
• C Manufacturer-wholesale-sales representative-retailer-consumer
• D Mnufacturer-wholesale-retailer-agent-consumer
• E Mnaufacturer-wholesale-retailer-sales-representative-consumer