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For 2A - lower the miles per gallon, more gallons you would need for any trip. Since all the cars are going 100 miles, most gallons will be used for D. Hence the most pollution.
For 2A - lower the miles per gallon, more gallons you would need for any trip. Since all the cars are going 100 miles, most gallons will be used for D. Hence the most pollution.
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70 will emit more right? since it didn’t show in the anwser choice ?