You are in a tropical port. The refrigeration machinery on a container loaded with air-cooled fruit fails. It cannot be repaired for 18 to 24 hours. Which step should you take to reduce the temperature rise and spoilage of the fruit?（）.
- ADischarge a cylinder of nitrogen into the container
- BShade the container and periodically hose it down
- CSeal any ventilation openings and add dry ice
- DSpread ice over the top layer and in any voids within the container