To derive the raw material to purchase during an accounting period, an accountant would calculate the raw material required for production and then: Multiple Choice add the desired ending raw-material inventory and subtract the beginning raw-material inventory. add the beginning raw-material inventory and subtract the desired ending raw-material inventory. add the desired ending raw-material inventory and subtract both the beginning raw-material inventory and the expected units to be sold. add the beginning raw-material inventory and the desired ending raw-material inventory. subtract the beginning raw-material inventory and the desired ending raw-material inventory.