Which of the following statements is true about the immigration of Muslims and Arabs to the United States

a. Many Arabs immigrated as the result of encouragement from U.S.-funded missionary programs in the Middle East.
b. The World War I encouraged many Arabs to immigrate to the United States for better opportunities.
c. The pattern for immigration was predominantly female and the destinations were cities of the West coast.
d. The immigration of Arab Americans to the United States increased with the advent of the restrictive national origin system.