Question 3: A once-through multi-stage flash distillation (OT-MSF) operates under the following conditions: - Steam flow rate, M. = 95.5 kg/s - Steam temperature, T, = 116 °C - Feed seawater temperature, Tr= 25 °C - Temperatures of the first, T₁ =91 °C - Top brine temperature, T.= 106 °C - Brine temperature in the last stage, T-40 °C -Temperature drop in each stage, AT-2.75 °C - Vapor temperature in the first stage, Tv1-102 °C - Heat capacity of liquid streams, Cp 4.18 kJ/kg °C - Salinity of feed seawater, Xr 42,000 ppm Determine: A. Total distillate flow rate, Ma B. The brine heater area, Ab C. Gain output ratio (GOR) of the unit.