The problem of bean ( water surplus ) in canal areas is a serious problem which should be resolved at the earliest . Which of the following is one of the reasons that is not connected with the solution?

• A. Only so much water should be used in irrigation as is necessary.
• B. Canal lining work should be done firmly
• C. to drain the water accumulated due to buoyancy
• D. To provide irrigation facility in higher parts by making lift canal.