Flow from a subdivision is collected in a detention basin. Assume that a short length of $3-$ft diameter reinforced concrete pipe with a square edge inlet $($loss coefficient $C_D=0\mathrm{.}5)$ is used to drain the basin, the outlet of the pipe is unsubmerged, and the inlet head is $10ft$ above the invert of the inlet end. The discharge $($cfs$)$ through the pipe is most nearly:

a$.18$

b$.85$

c$.150$

d$.330$