Which of the following statements is incorrect for the centralized supply chain?

Each stage of the supply chain receives the retailer's forecast mean demand.

For centralized supply chain we have centralized the demand information and the forecasting technique, but do not have the inventory policy.

The retailer observes customer demand and forecasts the demand mean and variance using a moving average with $p$ demand observations.

The distributor receives the order along with the retailer's forecast demand and uses this forecast to determine its target inventory level, and places an order.