Which of the Following Activities Best Describes the Functionality of Decoupling

Which of the following activities best describes the functionality of decoupling stock within firms' inventory systems?

A) Separation of the manufacturing process from order processing
B) Separation of the manufacturing process from the selling process.
C) Maintaining inventory to accommodate uncertainty in demand at different geographical positions.
D) Maintaining inventory at a central location for all stages of the value-creation process.