According to Wendy's specifications, submittals shall be furnished to the A/E:

The requirement for submittals to be furnished within 45 days after receiving the signed contracts and prior to the start of installation is aligned with standard practices in construction and project management. This timeline ensures that the architect and engineer (A/E) have adequate time to review all the necessary documents, such as shop drawings, material samples, and product data, before any physical work commences on the project site.

By stipulating this timeframe, Wendy's specifications help maintain the project's schedule, ensuring that any potential issues can be resolved before installation begins. This proactive approach minimizes the risk of delays and rework that could arise from improperly approved materials or methods. It also enforces a structured workflow where all parties are clear about submission deadlines, enhancing communication and efficiency in the project development process.

The other options suggest either a shorter or overly extended timeframe, which could compromise the project schedule or the quality of the review process. Thus, the specified period of 45 days strikes a responsible balance in managing timelines and quality control.