You are the project manager, and have been since the beginning of the project. The project consists of the expansion of a copper foil production plant for your European European customer. A complex and technological project with a duration of 20 months and a value of 75M where quality must not be neglected. Your planning, included in the master plan plan, indicated the following phases: - Preliminary engineering - detailed engineering - the realization of the works - commissioning and handover to the client. 1. What are the arguments in favour of subcontracting or contracting out the preparation of the mandate to prepare the preliminary and detailed engineering? 2. What are the arguments for keeping the same engineering activities in-house? engineering activities in-house? 3. 3. What method of contracting (selection method) would you recommend to your client for your client for the award of the construction contract? 4. What would be your motivation for doing the project in a Turnkey mode (designbuild)