Answer: Option 'B' is correct.
Step-by-step explanation:
People favor their in-groups, and
when they treat other groups unfairly, it is called out group derogation.
Out group derogation is the condition where favouritism towards out groups is absent.
There is a discrimination between in groups and out groups because of which favouritism is only for in groups and absent for out groups.
Hence, option ' B' is correct.