On November 4, Burton sold furniture to a customer for $9,000 with credit terms 2/10, n/60. Burton uses the gross method of accounting for sales discounts. If the full payment was received on November 9th, Burton would record a journal entry which includes:

A. a credit to Cash for $8,100.

B. a debit to Cash for $9,000.

C. a debit to Sales discounts for $900.

D. a debit to Sales discounts for $180.