A Core Prediction of Latane and Darley's Cognitive Model of Bystander

A core prediction of Latane and Darley's cognitive model of bystander intervention is that:

A) in an emergency, people are most likely to intervene when there are lots of people around because it will make them look good.
B) in an emergency, the likelihood of bystanders intervening depends on their belief in a just-world.
C) in an emergency, people will react differently according to whether or not others are present.
D) in an emergency, people are slow to act if the victim is already being helped by other people.