Which of the following assumptions is/are made in the analysis of hydraulic jump?1. It is assumed that before and after jump formation the flow is essentially two-dimensional and that the pressure distribution is hydrostatic.2. The length of the jump is small so that the losses due to friction on the channel floor are small and hence neglected.3. The channel floor is horizontal or the slope is so gentle that the weight component of the water mass comprising the jump is very high.

• A. 1 only
• B. 2 only
• C. 3 only
• D. 1, 2 and 3