Which of the following is a statement of fact by president bush?
a. "this plan will return order and fairness to our immigration system, and in so doing we will honor our values, by showing our respect for those who work hard and share in the ideals of america."
b. "during one great period of immigration -- between 1891 and 1920 -- our nation received some 18 million men, women and children from other nations."
c. "every citizen of america has an obligation to learn the values that make us one nation: liberty and civic responsibility, equality under god, and tolerance for others."
d. "as a nation that values immigration, and depends on immigration, we should have immigration laws that work and make us proud."