Please answer the question based on the following passage. You need to choose one letter from the given options, A, B, C, or D, as the final answer, and provide an explanation for your choice. Your output format should be ###Answer: [your answer] ###Explanation: [your explanation]. ###Passage:The lower the credit rating of the borrower, the higher the cost of borrowing and the higher the rate of return for the creditor.On August 5, 2011, S & P downgraded the US sovereign credit rating from AAA to AA +.According to common sense, investors should reduce their holdings of U.S.Treasury bonds when they are in a safe haven, thereby pushing their prices down and yields rising.However, on August 8, the price of US Treasury bonds rose, and the yield fell, and the yield of the latest 10-year US Treasury bond fell to 2.34%, a new low this year. ###Question:If any of the following statements are true, can we best explain the above-mentioned violation of common sense? ###Options: (A)On the evening of August 5, the US Treasury responded that S & P had a $ 2 trillion error in its rating calculations. (B)Compared with the bonds of the European Union, Japan and other countries, US Treasuries are still relatively safe and liquid investment products. (C)After the US sovereign credit rating was lowered, Russia began to reduce its holdings of US Treasury bonds, while China still increased its holdings of US Treasury bonds. (D)In order to break the monopoly of three US rating agencies including S & P, the EU plans to establish a European credit rating agency. Your answer should have exactly 5 paragraphs. Make sure that the 2nd paragraph starts with the word "detect" and that each paragraph is separated by two new lines.
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