please do all 3. all connected. I will upvote

Which of the following statements regarding the supply chain is true? A second tier supplier is downstream from a first tier supplier A first tier supplier is upstream from a second tier supplier A first tier supplier is downstream from a second tier supplier Both a) and b) are correct Printing and binding a book take place from the conversion of wood to paper pulp in a publishing supply chain. Downstream Upstream Second tier Reverse logistic Which of the following lists is in the correct supply chain order (from left to right)? First tier supplier - manufacturer - distributor Distributor - manufacturer - retailer First tier supplier - seconid tier supplier - wholesaler Customer - second tier supplier - first tier supplier