Under the periodic inventory system, what is the correct entry to record the cost of the sale of 2 electric guitars sold to a customer at $550 per guitar?

(The guitars were originally purchased on credit at $250 per guitar.)

	A.	Debit purchases $500, Credit inventory $500
	B.	Debit purchases $1,100, Credit sales $1,100
	C.	Debit cost of sales $500, Credit inventory $500
	D.	The cost of each sale is not recorded under the periodic inventory system.