Category 1 operational aids must be repaired within 7 days, and Category 2 within 30 days.

• A. 7 days, 30 days
• B. 30 days, 7 days
• C. 14 days, 60 days
• D. 1 day, 3 days

Answer: (A)

Two repair timelines are set by risk level: higher-risk, Category 1 items must be fixed quickly, within seven days, to maintain safe crane operation; lower-risk, Category 2 items have more leeway and can be repaired within thirty days. So the combination that assigns seven days to Category 1 and thirty days to Category 2 matches this structure, making it the correct choice. Other options mix these intervals, which would either rush less critical fixes or delay urgent ones, not aligning with the safety approach.