1) The best solution to avoid the (bullwhip ) effect with remained high service level is to... a) have JIT deliveries at all levels in the supply chain b) communicate and create transparency across the whole supply chain c) use JIT to achieve economy of scale d) avoid variations of the order quantity 2) what is correct about forecasting? a) It is more important in supply chains with shorter response times b) It is more important in supply chains with lower economy of scale c) It can improve both the inventory control and service level d) It is most important when the supply chain has high economy of scale and short response times