In Response to the Growing Power of Solidarity in Poland

In response to the growing power of Solidarity in Poland, Wojciech Jaruzelski, a general and head of the Polish government, suddenly

A) resigned in favor of the leader of Solidarity, Lech WaÇêsa.
B) called on the Soviet Union to come to the aid of the government.
C) appealed to the United Nations to resolve the crisis.
D) proclaimed martial law and arrested Solidarity's leaders.