Draw the energy and hydraulic grade lines between points A and $B$ using a datum set at the base of both tanks.

Choose the correct graph with those lines.

The valve in $($Figure $1)$ is opened. Assume that friction

losses within the pipe, valve, and connections can be

expressed as $1\mathrm{.}28\frac{V^2}{2}g,$ where $V$ is the velocity of

flow through the $0\mathrm{.}25-$ft$-$diameter pipe.

Figure