How Does Class Reclassify a Group from One Race to Another

How does class reclassify a group from one race to another?

A) Class can determine "race" because the social, economic, and cultural assimilation could reassign the group's race.
B) At one time, White only meant people of Anglo-Saxon heritage.
C) Race classifications have always been faulty.
D) Race was once tied to national origin, such as Germans seeing themselves as members of the Aryan race during the Nazi era.