4 You are managing a project to build a residential apartment in the Central Business District (CBD) of Sydney. A CBD is the central, primary, and most commercially active part of a city. You are considering using prefabrication approaches for some elements in the project. 1. Identify 3 elements that can use the non-volumetric approach and 3 elements that can use the volumetric approach (6 marks)? 2. Explain 3 advantages and 3 disadvantages of using prefabrication in this context (9 marks)