Which statements about the events in selma, alabama are true?

choose all answers that are correct.

a.
many americans were sickened by what they saw the police do on television.

b.
television coverage of the march hurt the civil rights movement in selma.

c.
more than 20,000 people joined the final march to montgomery to show their support.

d.
governor george wallace joined the marchers in a prayer service at the capitol.