The figure shown is a distillation column with reboiler and condenser. Sketch seven schematic diagrams of feedback control system to control the (a) feed flowrate F (b) distillate rate D (c) liquid level of reflux drum H (d) reflux ratio RR if the distillate rate is fixed (e) pressure P (f) temperature of a stage nearby top of the column Ttop (g) temperature of a stage nearby bottom of the column Tbottom.. Choose one of above control structure and sketch a feedback control system block flow diagram (BFD). The figure shown is a distillation column with reboiler and condenser. Sketch seven schematic diagrams of feedback control system to control the (a) feed flowrate F (b) distillate rate D (c) liquid level of reflux drum H (d) reflux ratio RR if the distillate rate is fixed (e) pressure P (f) temperature of a stage nearby top of the column Ttop (g) temperature of a stage nearby bottom of the column Tbottom.. Choose one of above control structure and sketch a feedback control system block flow diagram (BFD)