Construct a plot of vs$.$ energy that includes the energy of each projection from $4$a $($you dont have to redraw them$).($NB we have drawn a few of these plots in class for ethane, propane, butane, etc$)(2$pts for correct number of minima and maxima, $2$ pts for them being at the right angle, $2$ pts for correct relative energies$)$most stable conformerdraw projections of this

 

SCH3 A H most stable conformer H `SCH3 H SCH3 B CH3 draw projections of this