On December $20($the end of the fourth quarter$),$ Ivar Jorgenson, head operations planner for Ski & Sea, Inc., is in charge of developing a sales and operations plan for the coming year. Ski & Sea assembles jet skis and snowmobiles from subassemblies and component parts provided by reliable vendors. Both products $($end items$)$ utilize the same small engines and many of the same parts. They require the

Jacobs, F$.$ Robert. Manufacturing Planning and Control for Supply Chain Management $($p$.114).$ McGraw$-$Hill Higher Education. Kindle Edition.