Dale owns Dale Computers and Olivia owns Olivia Beauty Shop. Both Dale and Olivia want to employ the service of a security guard. Dale is willing to pay $15 per hour up to a maximum of 12 hours while Olivia is willing to pay $12 per hour up to a maximum of 12 hours. Using this information answer the questions below: a) Supposing security service is a private good, construct individual demand curves for Jill and Dale and market demand curves for Olivia and Dale. b) Supposing security service is a public good construct individual demand curves for Olivia and Dale and construct market demand curves for Olivia and Dale. c) Explain the following statement: “Market demand cure for a public good is determined by adding vertically”