Because of the low wages, it meant that the company had more money, which also meant more profits from their products. This meant that they could make more products for less money which also lowered the product's cost. This in turn lowered said cost to be smaller than their competition. That lowered cost meant that all other countries that made the same type product would stop and simply buy it from China. Therefore the answer would be B, Other countries quickly bought the low-priced products.
