Consider the supply chain involved when a customer orders a book from Amazon. Assume that the

concerning boundary includes customer, retailer $($Amazon$)$ and the distributor. CODP divides the entire

processes into two phases $($i$.$e$.,$ push processes and pull processes$).$ Identify the push$/$pull boundary and

two processes each in the push and pull phases. $($Hint: some possible processes are order fulfillment,

shipping, production, customer billing, customer returns, stock replenishments, and payment.