(a) Aggravated rape is unlawful sexual penetration of a victim by the defendant or the defendant by a victim accompanied by any of the following circumstances:

(1) Force or coercion is used to accomplish the act and the defendant is armed with a weapon or any article used or fashioned in a manner to lead the victim reasonably to believe it to be a weapon;

(2) The defendant causes bodily injury to the victim;

(3) The defendant is aided or abetted by one (1) or more other persons; and

(A) Force or coercion is used to accomplish the act; or

(B) The defendant knows or has reason to know that the victim is mentally defective, mentally incapacitated or physically helpless.

(b) Aggravated rape is a Class A felony.