medium · GMAT Verbal

Which of the following must be true based on these statements?

1. Across the world as a whole, total emissions from producing these particular goods rose after Nation X chose to tighten its rules.
2. The goods X now imports are produced with more emissions per unit than X's own factories emitted before the rules tightened.
3. Nation X's newly tightened emissions rules failed to bring about any reduction in its own domestic factory emissions at all.
4. X's consumers, taken together, reduced the total quantity of these goods that they buy and consume each year.
5. Other countries deliberately tightened their own emissions rules in direct response to the policy change adopted by Nation X.

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