Take the following as truth: For criteria pollutants, the 1996 National Emissions Inventory (NEI) used for the Heavy Duty Diesel vehicle rulemaking was used.
Then the following statement: "Rulemaking for the types of vehicles and machines listed under Heavy Duty Diesel was based on figures taken from the 1996 NEI which focused on criteria pollutants." is true, false, or inconclusive?
Answer: Inconclusive