Visage2c wrote:
I don't think B fits the bill!!
Reason: Only if the number of passengers are assumed to be equal for the plane and train, B could work.
Otherwise,
Let's assume for the trains the Pollution/Passenger is 20.
Similarly for the planes it's 10.
If the number of passengers for trains are 50, then total pollution level is 1000.
And if the number of passengers for planes are 200, the pollution level is 2000.
So planes could not be effective, even though pollution/passenger of train is higher than the
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