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5d. For the same vehicle details as in 5a Vehicle seating capacity: 100 passengers Steel vehicle consumes 2 mpg Aluminum vehicle consumes 3 mpg 1 gallon of gasoline results in the following emissions: 20 lb. CO2, 1 lb. of N20 A gallon of gasoline costs $3 Which vehicle type has the lower emissions? 5a. Two different types of vehicles are being compared: Vehicle seating capacity: 100 passengers Steel vehicle consumes 2 mpg Aluminum vehicle consumes 3 mpg 1 gallon of gasoline results in the following emissions: 20 lb. CO2, 1 lb. of N20 A gallon of gasoline costs $3 Define the Functional Unit to be used