Under FIDIC Red Book 2017, Clause 1.1 [Definitions] and Clause 1.5 [Priority of Documents] define the composition and hierarchy of the Contract. The Contract is not limited to only General and Particular Conditions; it includes multiple documents such as the Contract Agreement, Letter of Acceptance, Letter of Tender, Specifications, Drawings, and Schedules. Therefore, Option A is incorrect.

Option B is correct. The term “Conditions of Contract” explicitly refers to the General Conditions as modified or amended by the Particular Conditions. This reflects how Particular Conditions adapt the standard FIDIC provisions to project-specific requirements while forming a single integrated set of contractual conditions.

Option C is incorrect because Contract Data forms part of the Particular Conditions, not the General Conditions. It contains project-specific data that complements and modifies the General Conditions.

Option D is correct. The Contract Agreement, Letter of Acceptance, and Letter of Tender are explicitly listed as core Contract documents under FIDIC 2017. These documents establish the legal formation of the Contract and define the agreed scope, price, and commitments between the Parties.

This structure ensures clarity, proper hierarchy, and enforceability of contractual obligations in FIDIC contracts.