What Was the First Step Taken by Nixon to Build

What was the first step taken by Nixon to build friendly relations with China in the early 1970s?

A) He helped China in developing their human resources through programs aligned with the U.S. Agency for International Development (USAID) .
B) He facilitated joint military exercises and conducted humanitarian missions to boost relations between China and the United States.
C) He agreed to freeze the number of long-range missile launchers in the United States if China agreed to do the same.
D) He requested for the inclusion of China in the Commonwealth of Nations.
E) He accepted an invitation to send the American table tennis team to compete in a friendly international event in China.