Perpetual Inventory Master Files Maintained by Persons Who Do Not

Perpetual inventory master files maintained by persons who do not have custody of or access to assets are a useful cost accounting control, because:

A) they provide a record of the use of raw materials and sale of finished goods, which can be reviewed for obsolete or slow- moving items.
B) they are a record that can be used to pinpoint responsibility for custody when there are differences between physical counts and amounts shown on records.
C) they provide a record of items on hand, which is used to initiate production or acquisition of additional materials or goods.
D) all of the above.