Paris Corp. obtained the following information from the Raw Materials Inventory account and purchasing records for the second quarter of the current year:

Beginning Raw Materials	$4,500
Ending Raw Materials	$2,700
April Purchases	$3,600
May Purchases	$1,800
June Purchases	$1,800

The amount of Raw Materials used this period was:

Select one:

a. $1,800

b. $14,400

c. $9,000

d. Some other amount