The individual responsible for inventory of necessary office supplies, should do which of the following to ensure items are on hand when desired? A$.$ Review the inventory monthly to see what supplies need to be reordered B$.$ Determine when new inventory arrives, how long it should last and order more when that time comes C$.$ Decide on a spare minimum for each type of supply and reorder when that minimum is reached D$.$ Secure an estimate of needed supplies from the individuals who use the items