For under water concreting.

• A. at least 10 percent more cement is required as compared to dry conditions
• B. the volume of coarse aggregates shall not be less than one and half times and not more than twice that of fine aggregate
• C. the slump should not be less than 100 mm and not more than 180 mm
• D. dewatering by pumping is not done or until 24 hours thereafter
• E. All the above