Which of the following best describes the protests at the 1968 Democratic Convention in Chicago?

Which of the following best describes the protests at the 1968 Democratic Convention in Chicago?

a. Anti-war protestors beat Chicago police and attacked them with tear gas.
b. Anti-war Democrats had no candidate, so they protested at the convention.
c. Pro-war protestors beat Chicago police and attacked them with tear gas.
d. Pro-civil rights Democrats had no candidate, so they protested at the convention.