. Everyone in this class was born in the era called: A. A. C.
B. Anno Domini
C. A. C.E.
D. all of the above

Everyone in this class was born in the era called:

B. Anno Domini.

Explanation:

Anno Domini is a Latin expression that means “in the year of the Lord”. It uses the birth of Jesus Christ to separate the different eras. All of us are living in Anno Domini. It is common to use the abbreviation A.D. - be careful, it is not A.C. Another way to express the same idea is by using the abbreviation C.E., which means "current era". This expression is used to avoid the obvious connection Anno Domini has with Christianity.

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