The Japanese Proverb "The Nail That Sticks Up Gets Hammered

The Japanese proverb "the nail that sticks up gets hammered down" means that

A) people should not stand out or be different from everyone else.
B) the Japanese do not like sloppy workmanship.
C) those people who stand up for what they believe in will get what they need in life.
D) you might get hit if you disagree with someone in Japan.