c.
G.S. 14-17 or
G.S. 14-18, and the basis of the conviction was the unintentional death of another person while engaged in the offense of impaired driving under
G.S. 20-138.1 or
G.S. 20-138.2.
The pleading and proof of previous convictions shall be in accordance with the provisions of G.S. 15A-928.