The statement" The foreign firms sell at below the production cost and whenever it is driven out so it increases the prices" is correct.
In the case when the foreign firms export a product i.e. lower than the cost of production that means they make the losses is when:
In other cases, it does not make the losses only the above factors should be considered.
Therefore we can conclude that the statement "It is part of the long-term strategy where the foreign firm should sell less than the cost of production in the short period of time and whenever it has driven out the competition of the domestic united states so the prices should be increased" is correct.
Learn more about the cost of production here: brainly.com/question/15235684