decrease, increase, or no change

For each of the following items, signify the effect the item will ultimately have on the COST PER UNIT of merchandise inventory on the books of the business recording the item. For purposes of this question, assume the business has NOT experiences any changes in the invoice prices charged by its vendors over time. Purchase returns Choose Purchase allowances [Choose Purchase discounts | Choose Incoming freight costs [Choose Sales returns [Choose] Sales allowances Choose) Sales discounts Choose Outgoing freight costs Choose