$11.$ VMI $($Vendor Managed Inventory$)"$ is a method in which a vendor, i$.$e$.$ a material supplier, holds and manages materials and parts of their customers. VMI between Procter & Gamble, Co and Wal$-$Mart Stores, Inc. is a famous example of a partnership transaction between a diaper manufacturer and their retailer.

From our lecture notes, how does VMI improve supply chain coordination? Select one:

a$)$ The supplier treats the retailer with priority compared to all other retailers it serves.

b$)$ The supplier uses POS data in order to replenish immediately every time the retailer sells the product.

c$)$ The supplier determines inventory levels and inventory replenishment policies at the retailer in order to optimize production$/$shipments$.$

d$)$ The retailer does not share forecast data with the supplier in order not to impact the production plans.