Corey Sales Sold Its Old Office Furniture for $1,100

Corey Sales sold its old office furniture for $1,100.The original cost was $8,000,and at the time of sale,it had accumulated depreciation of $7,000.What was the effect of the transaction?

A) Gain of $100
B) Gain of $400
C) Loss of $1,600
D) Loss of $600