What Has Research on the Neuroscience of Morality Shown in New

What has research on the neuroscience of morality shown in New World capuchin monkeys?

A) Monkeys will refuse to participate in token exchanges if they see another monkey get a bigger reward than they are offered
B) Monkeys who steal and hoard food eventually will climb to the top of the social hierarchy
C) Monkeys only react to unfair acts if they are in large groups
D) Monkeys will only retaliate against unfair acts if they are repeated over many instances