A school received a large amount of donation without real name in the flood fighting and disaster relief charity activities. Through the investigations, it can be concluded that it was donated by one of Mr. Zhou, Mr. Wu, Mr. Zheng and Mr. Wang. They four were inquired. Mr. Zhou said: I didn't donate money; Mr. Wu said, it was donated by Mr. Wang; Mr. Zheng said, Mr. Wu donated it; Mr. Wang said, I certainly didn't donate money. Through detailed investigation, it was confirmed that only one of the four people told the truth.
Mr. Zhou told the truth and Mr. Wu donated it can be a right conclusion inferred from the above.