The Potential Spread of Weapons of Mass Destruction (WMD)to Other

The potential spread of weapons of mass destruction (WMD) to other states and terrorist groups is primarily a result of which of the following?

A) The fascination with such deadly means of destruction
B) The low cost of production of WMD
C) The technological information that can be found on the Internet in order to produce WMD
D) The inability of these groups to fight the United States using conventional weapons