Judaism and Christianity are monotheistic religions, of which Christianity originated from Judaism, and in the time of Judaism. Christianity is nothing but clarification, fulfillment, and practical application of the Old Testament. Jesus Christ, who preached and practically applied the rules of the Old Testament, is not recognized by Judaism as the Messiah, he is the Messiah only for Christians. Although Judaism does not recognize the New Testament, Christianity and Judaism originate from a monotheistic conviction, begun even from Abraham, who is considered the father of the principle of both Jews and Christians. Abraham's idea is constantly present in the Old Testament as the Father of the Jews, in the New Testament there is the significance of the one who recognized one God and as such represents the foundation of Christianity.
The answer is: C.
