The correct answer is: A. Flushing
Flushing is the most common method of cleaning small sewers. It involves using a high-pressure stream of water to dislodge and remove debris from the sewer line. This method is effective for removing both solid and liquid waste, and it can be used to clean sewers of all sizes.
Cane rodding is a less common method of cleaning small sewers. It involves using a long, flexible rod to push debris through the sewer line. This method is not as effective as flushing, and it can damage the sewer line if it is not used properly.
Wooden pills are a type of sewer cleaner that is made from wood shavings. They are placed in the sewer line and then flushed with water. The wood shavings help to break down and remove debris from the sewer line. This method is not as effective as flushing, and it can clog the sewer line if too many pills are used.
None of these is the correct answer.