In which situation would Bills of Distribution be more effective than Sourcing Rules?

When Organization A, Organization B, and Organization C make their own products

When Organization A buys from a Supplier; Organization B transfers from Organization A, and Organization C transfers from Organization B

When all organizations transfer 50% of the material from Organization B, and 50% from Organization C

When all organizations are buying from a single outside supplier

When Organization A, Organization B, and Organization C transfer from Organization C