What Is One Reason for the Decrease in the U

What is one reason for the decrease in the U.S.Jewish population?

A) Over the last 60 years,Jews have become more likely to violate rules specifying religious endogamy.
B) Over the last 60 years,Jews have become less likely to violate rules specifying religious endogamy.
C) Over the last 60 years,Jews have become more likely to violate rules specifying religious exogamy
D) Over the last 60 years,the birth rate for Jewish couples has steadily increased.