Consider the situation of office workers traveling their daily commute to their workplace using different modes of transportation. The efficiency of these modes of transportation can be compared using the measure "person-miles per gallon gasoline equivalent (GGE)". Calculate the value of the "person-miles per GGE" for each case given below (Part I), and then determine which is the more energy efficient option amongst two mixed-transport scenarios (Part II): PART I a. Private auto: a single person riding in their own automobile, which gets 32 miles per gallon; b. Carpool: three persons riding in a larger automobile, which gets 20 miles per gallon; c. City bus: a bus that gets 6 miles per gallon, and is carrying on average 20 passengers; d. Light rail: a light rail electric-run commuter train that consumes 9.0kWhr per mile, and has an average passenger load of 50 passengers. Use conversion factors 1kWhr=3,412 BTU, and 1 gallon gasoline has 124,000 BTU. e. Helicopter: a 4-passenger helicopter that burns 20 gallons of gasoline per hour and has