An example of Double Marginalization in supply chains is

Option A

When a shipping company waits until an entire truck is filled before shipping the goods to the retailers, even though the demand at the retailer is unpredictable and customers will likely not return if they don$$t find what they are looking for.

Option B

When a cookie and snack manufacturer sets up a collaborative forecasting process with grocery chains across the US in order to improve their overall production planning.

Option C

When a high$-$street shoe store decides to open an on$-$line sales channel, despite the risk that its high street store might suffer.

Option D

When a US department store has to place an order to its suppliers for swimsuits in January, several months before the summer selling season.