The Truman-Molotov Meeting Provides Evidence of Which of the Following

The Truman-Molotov meeting provides evidence of which of the following?

A) The Soviets used underhanded tactics in achieving their goals
B) Truman did not appreciate the complexities of international diplomacy and adopted a get-tough approach toward the Soviet Union
C) Truman privately realized that the Soviets had earnestly attempted to live up to their agreements at Yalta
D) The Soviets refused to negotiate on even the most trivial of issues