According to Paul, What Was the Most Important Difference Between

According to Paul, what was the most important difference between Judaism and Christianity?

A) the atonement for sins provided by faith in Jesus
B) Jews followed Jewish laws; Gentiles converted to Christianity did not.
C) Jesus was the Son of God to Jews.
D) Jesus was the anointed king to the Christians.
E) No Jew had an obligation to follow Jewish law after the birth of Jesus.