What Aspect of Standard Outlining Procedure Is NOT CORRECT in the Following

What aspect of standard outlining procedure is NOT CORRECT in the following example?
1. The Ironman Triathlon includes three competitive events.
1) Competitors must swim five miles.
2) Competitors bicycle for 101 miles.
3) Competitors run for over 26 miles.
2. Ironman competitions are held in many different locations in the U.S.
1) Competitions are held in Atlanta.
2) Two competitions are in New York City.
3) Honolulu hosts a competition in November.

A) The use of standard numbering.
B) The use of at least two subdivisions.
C) The use of complete sentences.
D) The use of logical divisions of an idea.