RSA 634:1 Arson.

I. A person is guilty of arson if he knowingly starts a fire or causes an explosion which unlawfully damages the property of another.
II. Arson is a class A felony if the property damaged is:
(a) An occupied structure and the actor knew it was an occupied structure; or
(b) An historic structure.
III. Arson is a class B felony if:
(a) The property is either that of another or the actor's property, and the fire was started or the explosion caused for the purpose of collecting insurance on such property; or
(b) The actor purposely starts a fire or causes an explosion on anyone's property and thereby recklessly places another in danger of death or serious bodily injury, or places an occupied structure of another in danger of damage; or
(c) The p