72Secondly, the Parliament states that the applicant must have known that Directive 92/50 and the General Terms and Conditions, both of which are applicable to the contract in question, provide that all contracts must be concluded in writing. Consequently, by inferring from Mr Candidi's statements that the contract had already been awarded, or that its award was imminent or that some decision had been taken by the Parliament which could justify incurring the expenses necessary to perform the contract, the applicant itself acted imprudently irrespective of any fault on the part of the Parliament (see Case C-330/88Grifoni v EAEC [1991] ECR I-1045, and Case T-133/89Burban v Parliament [1990] ECR II-245, paragraph 36).