What Do Social Loafing and Decision Polarisation Have in Common

What do social loafing and decision polarisation have in common?

A) Group decisions become more extreme, so that individuals who are naturally lazy become even more so.
B) Some people do not pay their 'fair share,' which causes groups to polarise into smaller groups.
C) Both effects show how individualism is maintained even within groups that exert considerable peer pressure.
D) Both are examples of how individuals and groups of people behave differently within larger groups than they would behave as individuals.