On December 16, 2015, B. Darin Company received $4,000 from S. Dee Company for rent of an office owned by B. Darin Company. The payment covers the period from December 16, 2015 through February 15, 2016. B. Darin Company recorded this as Unearned Rent when it was received on December 16. The adjusting entry on December 31 would include a:

A) debit to unearned rent revenue of $2,000.

B) credit to rent revenue of $1,000.

C) credit to unearned rent revenue of $1,000.

D) debit to rent revenue of $2,000.