(1) DUII is a Class C felony if the defendant has been convicted of DUII (or its statutory counterpart in another jurisdiction), at least twice in the ten (10) years prior to the date of the current offense

(2) once a person has been sentenced for a Class C felony under this statute, the ten (10) year time limitation is eliminated & any subsequent violation of DUII will be a Class C felony regardless of the amount of time which intervenes between convictions

(3) on conviction for a Class C felony under this statue, there's a mandatory minimum ninety (90) day incarceration term, without reduction for any reason