Which firefighting method is an example of an indirect attack on a fire?（）.
- ABouncing a straight stream of water off the overhead to create spray effect
- BSpraying foam on a bulkhead and letting it flow down and over a pool of burning oil
- CFlooding a paint locker with CO2 and sealing the compartment
- DCooling adjacent bulkheads with water to prevent the spread of the fire by conductio