For each statement below, identify whether the statement applies to the periodic inventory system or perpetual inventory system. 

a. Normally used for relatively inexpensive goods. 

b. Keeps a running computerized record of merchandise inventory. 

c. Achieves better control over merchandise inventory. 

d. Requires a physical count of inventory to determine the quantities on hand. 

e. Uses bar codes to keep up- to- the- minute records of inventory.