In his The History of the Decline and Fall of the

单项选择题

In his The History of the Decline and Fall of the Roman Empire, Edward Gibbon lists some reasons for the rise of Christianity. Which one of the following is NOT on his list?
A、The doctrine of a future life.
B、The pure and austere morals of the Christians.
C、The discord of the Christian group.
D、The miraculous powers ascribed to the church.