Which of the Following Statements Most Accurately Describes the Distinction

Which of the following statements most accurately describes the distinction between racial groups and ethnic groups?

A) All members of a certain ethnic group are also members of the same racial group.
B) All members of a certain racial group are also members of the same ethnic group.
C) Members of the same ethnic group may be made up of members of many different racial groups.
D) Members of the same ethnic group cannot be made up of members of the same racial group.