What Is the Unique Aspect of Islam Among the Major

What is the unique aspect of Islam among the major religions of the world?

A) Islamic law recognizes no separation between religious belief and civil laws.
B) Fundamentalism is the choice of the majority of adherents to Islam today, and always has been.
C) Holy wars have always been aimed only at non-Muslims, or infidels.
D) Muslims have never used warfare to spread their faith until the 20th Century.
E) Islam encourages religious freedom more than other major religions.