Take the following as truth: The benefits to be gained in air quality were calculated by EPA for the first six years (including the interim program) to be reductions of 125,000 tons of hydrocarbons, 2,388,000 tons of carbon monoxide and 450,000 tons of nitrogen oxide.
Then the following statement: "The improvement in air quality is likely to prevent any future occurrences of acid rain." is true, false, or inconclusive?