Compensation of Losers from Opening an Economy to International Trade

Compensation of losers from opening an economy to international trade is not common,because ________.

A) losers don't lose so much that they would require being compensated
B) the loss is made up through the availability of a wide array of goods and services
C) it is difficult for governments to carry out such compensation policies
D) the government would have to transfer huge amounts of money to compensate losers