When preparing a direct materials budget, the required purchases of raw materials in units equals: Multiple Choice raw materials needed to meet the production schedule - desired ending inventory of raw materials - beginning inventory of raw materials. O O raw materials needed to meet the production schedule - desired ending inventory of raw materials + beginning inventory of raw materials O raw materials needed to meet the production schedule + desired ending inventory of raw materials beginning inventory of raw materials O raw materials needed to meet the production schedule desired ending inventory of raw materials - beginning inventory of raw materials