Suppose there's a system where water is pumped to a rooftop tank 80 m above ground level. The water is pumped at a steady rate of 1.2$\times$10⁵ kg/s for 12 hours. Calculate the total energy consumption, in kWh, needed to pump water to the rooftop tank.

• A. 1.13$\times$10⁶ kW.h
• B. 7.85$\times$10⁶ kW.h
• C. 94.1$\times$10⁶ kW.h
• D. 7.85$\times$10⁹ kW.h