Given is the procedure for construction of flow net. Which of the following options is correct sequence of construction?1. Sketch one flow line or one equipotential line adjacent to a boundary flow line or a boundary equipotential line.2. Draw the hydraulic structure, the head water elevation and the soil profiles to a convenient scale.3. Expand the sketching to more equipotential lines and flow lines, always keeping in mind that roughly square figures should result in the process4. Establish the boundary conditions.

• A. 2,4,1, 3
• B. 4,3,1,2
• C. 2,3,1,4
• D. 1,2,3,4