If a case is heard by the U.S. Supreme Court and the government is one of the parties involved, then the Solicitor General would represent the government. The correct option among all the options given in the question is option "b". If the United States is not directly involved in the case, then also the Solicitor general can give his views.
Georg Otto Hermann Balck was highly decorated officer of the German Army who served in both World War I and World War II, rising to the rank of General der Panzertruppe.