Which of the Following Has Led to Significant Tensions Between

Which of the following has led to significant tensions between the US and China in recent years?

A) An aviation accident that forced a U.S. Navy fighter plane to land on China's Hainan Island.
B) American outrage at the massacre in Tiananmen Square.
C) American support for an independent Taiwan and China's determination to hold the island.
D) China's distrust of the United States for their ongoing involvement in Southeast Asia.
E) American admonitions that China must improve its human rights record.