Under FIDIC Yellow Book 1999, Sub-Clause 5.2 [Contractor’s Documents] requires the Contractor to submit design documents to the Engineer for review. Importantly, the responsibility for planning and coordinating these submissions lies with the Contractor.

The Contractor must ensure that the programme (Clause 8.3) allows sufficient time for the Engineer’s review process, including any resubmissions that may be required if documents are not approved initially. This reflects the design responsibility placed on the Contractor in the Yellow Book, where the Contractor controls both design and execution.

The Engineer’s role is to review and respond within the time stated in the Contract, but the Engineer is not responsible for integrating this review time into the overall project schedule. Similarly, the Employer has no direct role in managing this timing.

From a contract management perspective, failure by the Contractor to allow adequate review time may lead to delays for which the Contractor bears responsibility, as such delays would not typically qualify for Extension of Time unless caused by the Engineer exceeding prescribed review periods.

Thus, proper programming and coordination of document submissions is a key Contractor obligation, making Option A correct.