1. A person commits the crime of rape if:
(1) He has sexual intercourse with another person to whom he is not married, without that person's consent by the use of forcible compulsion; or
(2) He has sexual intercourse with another person to whom he is not married who is less than fourteen years old.
2. Rape is a class B felony unless in the course thereof the actor inflicts serious physical injury on any person or displays a deadly weapon in a threatening manner, in which cases rape is a Class A felony.