【单选题】It is a curious phenomenon of nature that only two species practice the art of war -- men and ants, both of which, significantly, maintain complex social organizations. This does not mean that only me...
A.
There are different factors which may lead to war.
B.
War has been rooted in and will develop with human history.
C.
Both men and ants maintain complex social organizations.
D.
Only men and ants have developed and practiced the art of war.