Traditional wholesaler and retailer

B is in line with the meaning of the question. The circulation link of the traditional business model is: producer-wholesaler-retailer-consumer; The circulation link of e-commerce mode is: producer-consumer. Compared with the two, the circulation link is reduced, which will reduce the operating cost of producers, thus lowering the price of goods, while the reduction of prices will improve the consumption level of residents, so the correct transmission path may be ①→→→→→→→→ ②;

ACD is not relevant to the topic, and all of them are excluded.

Therefore, B.