Q 3A.3: AllWeather makes umbrellas and uses a process cost system. Each day, AllWeather produces 640 umbrellas; each period, AllWeather produces 18,200 umbrellas; each year, All Weather produces 72,000 umbrellas. In addition, AllWeather does about 100 production runs per year. At what point should AllWeather determine its total manufacturing costs? A : At the end of each production run B : At the end of each year C : At the end of each day D : At the end of each period