According to paragraph 7, what problem did the early power station in the town of Godalming in Surrey, United Kingdom, face in providing electricity? A. The traditional waterwheel is used was not large enough to meet the demand for energy. B. The flow of the River Wey, on which the power station depended, was unreliable. C. The operators of the Godalming power station had little experience with hydro technology. D. The steam engine that turned the waterwheel was faulty and needed to be replaced.