Identify which costing system$$job order or process cost$$the following companies would primarily use: $($a$)$ Quaker Oats, $($b$)$ Jif Peanut Butter, $($c$)$ Gulf Craft $($luxury yachts$),$ and $($d$)$ Warner Bros. Motion Pictures. Explain your answerrs for each company. Can a company use both job order costing and process costing? Why or why not?