3) AUC is planning to have a new campus in Al Alamein City. It invites construction companies to bid for the building of its new headquarters. a) What is the bank instrument that would best secure this deal for both parties? Is it a funded or an unfunded facility? Explain. b) What is the banking instrument that would ensure AUC that each bidder would commit to the terms and conditions of their offer for the new headquarters if they won the tender? c) After Company XYZ received the advance payment, what kind of instrument should be issued by the bank? d) If any problem occurs regarding the quality of the building, i.e. the performance of Company XYZ responsible for building the headquarters, what bank instrument would be needed then to preserve the rights of AUC?