Concept:Wholesalers link producers and retailers by buying in bulk and supplying goods in smaller lots.
Explanation:Wholesalers do not usually sell directly to final consumers.
They purchase large quantities from producers and distribute them to retailers.
Their important role includes providing finance: they pay producers promptly for bulk stock, and they often sell to retailers on credit.
Hence, they finance both producers and retailers.
The other options describe retailers, not wholesalers.
Answer:B. finance both producers and retailers