Which of the Following Statements About a Periodic Inventory System

Which of the following statements about a periodic inventory system is true?

A) Under the periodic inventory system purchases of inventory are typically credited to the Purchases account.
B) Available discounts taken by the customer for early payment of an invoice are termed discount received by the seller.
C) Freight-in is an account that is subtracted from the Purchases account to arrive at the net cost of goods purchased.
D) Under the periodic inventory system, allowances granted by the supplier to the merchandiser are credited to the Purchases returns and allowances account.