Which information is MOST HELPFUL to identify the social context of this speech?
A) 1963; Lincoln Memorial during the March on Washington for Jobs and Freedom, delivered to over 250,000 civil rights supporters
B) 1861; Lincoln Memorial during the March on Washington for Jobs and Freedom, delivered to over 250,000 anti-slavery supporters
C) twenty-first century; Americans supporting continued freedom and racial equality delivered to over 250,000 democrats and republicans
D) 1963; Lincoln Memorial during the March on Washington for Jobs and Freedom, delivered to over 250,000 African Americans from New York and Mississippi.