Consider the following demand patterns. Determine whether each pattern is relatively easy or relatively difficult to forecast accurately. Explain your answer. a. Overall quarterly demand across all product lines for a multinational company. b. Demand for a new technology product with a short product life cycle. c. Monthly demand for a designer dress over an 18-month planning horizon. d. Daily demand for each possible sandwich configuration at a made-to-order sandwich shop. e. Weekly demand for lighting products at a home improvement store's regional distribution center.