The diagram illustrates the design of a water wheel that turns a generator to generate electrical power. The flow rate of the water is $200\,\text{kg s}^{-1}$. The generator provides a current of $32\,\text{A}$ at a voltage of $230\,\text{V}$. If any change in the kinetic energy of the water is ignored, what is the efficiency of the system?
- A$14\%$
- B$16\%$
- C$22\%$
- D$47\%$