You are an intern at the Shanghai Morning Post. The editor-in-chief asks you to write the first draft of an editorial for next week’s edition. Your assignment is to describe the costs and benefits of building a new highspeed rail from Shanghai to Hong Kong. It takes 19 hours to drive from Shanghai to Hong Kong, and people usually face a lot of traffic congestion. The high-speed rail will cost around HK$84.4 billion and the funds may come from the government or the private sector. What are the opportunity costs of building the rail? What are some of the benefits that citizens will enjoy if the railway is built? What other factors would you consider in writing this editorial?