Sales revenue of a merchandiser amounted to $20,000, sales returns and allowances amounted to $2,500, and sales discounts of $700. The merchandiser uses a perpetual inventory system. The first entry in the closing process would include:

A.a debit to Income Summary for $2,500.

B.a debit to Income Summary for $19,300.

C.a credit to Income Summary for $17,500.

D.a credit to Income Summary for $20,000.