What two factors are most responsible for the third wave of Arab American immigrants?

What two factors are most responsible for the third wave of Arab American immigrants?
 
  a. The worldwide focus on women's issues and government funding for global childhood education
  b. The recruitment of college students and the general interest in Arab history
  c. The need for skilled labor and improved relations with the Middle East
  d. The end of restrictive immigration quotas and the political unrest in the Middle East

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The largest Arab American groups  made up mostly of the descendants of the first wave  are __________.
 
  a. Egyptians and Iraqi
  b. Syrians and Egyptians
  c. Lebanese and Syrians
  d. Iraqi and Lebanese