If Japan Is Accused of Dumping Umbrellas into the US

If Japan is accused of dumping umbrellas into the US market,it is believed that Japan is:

A) selling umbrellas in the US for a price above production costs
B) selling umbrellas in the US for a price below production costs
C) producing umbrellas cheaper than the US can produce them
D) producing umbrellas at a higher cost than the US produces them