Queen Mattresses, Inc. had the following transactions occur during May 20X3. Assume there is no beginning inventory.

May 2 Inventory was purchased on account for $5,000, terms 2/10, n/30.

May 3 Inventory costing $1,000 was returned.

May 9 Paid for the inventory.

May 15 Inventory costing $2,200 was sold on account for $3,800, terms 3/10, n/45.

May 31 Closing entries are prepared for the month-end financial statements.

If Queen Mattresses, Inc. were using the perpetual inventory system, what is the journal entry for May 9?

A) Accounts Payable 4,000

Inventory 100

Cash 3,900

B) Accounts Payable 4,000

Inventory 80

Cash 3,920

C) Accounts Payable 5,000

Inventory 100

Cash 4,900

D) Accounts Payable 4,000

Cash Discounts on Purchases 100

Cash 3,900

E) Accounts Payable 4,000

Cash Discounts on Purchases 80

Cash

Note: Please show the math for the answer.