Sociologically, What Is the Difference Between a Group and a Crowd

Multiple Choice

Sociologically, what is the difference between a group and a crowd?

A) Individuals associated with a group don't share any common attributes.
B) Individuals associated with a group feel a shared identity and have ongoing social relations.
C) Individuals associated with a group don't have ongoing social relations.
D) Individuals associated with a crowd remain in contact.