Which of the Following Best Characterizes "Ethnic Groups

Which of the following best characterizes "ethnic groups"?

A) A group of families living in a well-defined geographical location.
B) A group of individuals who area,at some level,all biologically related to each other.
C) A group of people who all speak the same language.
D) A group of people who all seem to others to look like each other.
E) A group of people who view themselves as sharing an identity that separates them from others in society.