Has a Nuclear Device Ever Been Exploded by a Terrorist

Multiple Choice

Has a nuclear device ever been exploded by a terrorist?

A) No, although a terrorist has been arrested who possessed and planned to use a stolen nuclear weapon.
B) No, although a terrorist has been arrested who possessed and planned to use a dirty bomb.
C) No, in fact there are no known instances of terrorists even possessing a nuclear device.
D) Yes, a small dirty bomb was exploded during the Iraq War.
E) Yes, terrorists have entered a nuclear power plant in Pakistan and dispersed radioactive materials.