On April 15, Topper Company agrees to a contract to sell 9,000 tie-dyed flags for $45,000 to PeaceTime, Inc. On August 1, after 5,000 flags have been delivered, Topper and Peace modify the agreement to sell an additional 6,000 flags for $21,000 which is significantly lower than Topper's stand-alone selling price at that time. During August, Topper delivers 1,000 flags. How much revenue will Topper recognize for the month of August?

A) $4,400

B) $4,250

C) $4,100

D) $5,000

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