You are a Project Manager in Seneca Solar. Seneca Solar is a well-known Solar Panel installation company and has successfully delivered more than 100 solar panel installation projects for building from different sizes in the last 5 years. Last week, Seneca Solar was chosen to install solar panels on the rooftops of a shopping mall in North of GTA. You, as the Project Manager, are responsible to estimate cost and time for this project. Please note that your estimation needs to have a high level of accuracy to be approved by project stakeholder. Which estimation method you will use? [1 mark] Specify and explain why you will use this estimation method? [2 mark]