A liquid$-$vapor equilibrium curve for propane$-$pentane is shown below f$-$r

$.$ The feed is a saturated vapor with

$0\mathrm{.}55$ mole fraction propane. The column operates at a reflux ratio $\frac{L}{D}=3$ with a partial condenser and a partial reboiler. It is desired to operate the column to achieve a mole fraction of propane $x_D=0\mathrm{.}95$ in the distillate and $x_B=0\mathrm{.}05$ in the bottoms. Draw a McCabe$-$Thiele diagram with operating lines, feed line, and step off the equilibrium stages. Mark the partial condenser and partial reboiler.