A serious structural defect is discovered in an ongoing building project. The solution to this defect is either to demolish the whole structure and rebuild (cost = $1.5 million) or to install an advanced engineering support system (cost = $3.0 million). The client wants the project to be completed within the requested timeframe and favours the more expansive engineering solution. However, the client does not want to add more money to the existing project funds and asserts that the contractor should bear the additional costs. The contractor refuses to be held liable for the costs because they believe that the defects was a result of faultydesign by the client's design consultant. The design consultant on the hand refutes the contractor'sallegation and contends that the structural defect was a result of poor workmanship.

Suggest a dispute resolution method that would be most appropriate to resolve the disputes in this scenario. Support your answer with reasons and state any assumptions. You may use examples or illustrations in your answer.