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5. The mаteriаl requirements оver the different lifecycle stаges and the electricity generatiоn оf two renewable energy (RE) technologies are shown in the diagram below. The lifetime of the two technologies is the same, 25 years. The material requirements are for the technology's overall lifetime (e.g., RE tech 1 requires 9 kg of material B over its lifetime). Each RE technology is expected to be deployed in either country 1 or country2 i.e., the following are the options: RE Tech 1 in country1 and RE Tech 2 in country2 OR RE Tech 1 in country2 and RE Tech 2 in country1. The environmental benefit from a RE technology is derived by renewable electricity offsetting carbon-intensive grid electricity. The CO2 footprint of electricity in country1 and country2 are 400g CO2e/kWh and 350g CO2e/kWh, respectively. The carbon intensity of the materials are as follows – A: 10 kg CO2/kg; B: 14 kg CO2/kg; C: 20 kg CO2/kg; D: 15 kg CO2/kg; E: 6 kg CO2/kg; F: 8 kg CO2/kg; G: 12 kg CO2/kg. (Total 35 points) 5a) What is the net environmental benefit over 25 years if RE 1 is deployed in country 1? (7 points) 5b) What is the net environmental benefit over 25 years if RE 1 is deployed in country 2? (7 points) 5c) What is the net environmental benefit over 25 years if RE 2 is deployed in country 1? (7 points) 5d) What is the net environmental benefit over 25 years if RE 2 is deployed in country 2? (7 points) 5e) In which country would you deploy RE Tech 1 – country 1 or country 2 – and RE Tech 2 – country 1 or country 2? Why? (7 points)