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:Since the emperor, the official history of China has been the diary of the emperor ’s own family.That is the standard image of the emperor.To understand the true face of the emperor, one must also read NAME_1, which is a portrayal of the emperor's life. ###Question:Which of the following statements is the assumption upon which the above argument relies? ###Options: (A)All the official history records are personal matters of the emperor's family. (B)Only by reading wild history can you know the little-known privacy of the emperor. (C)Only by combining Zhengshi and Yeshi can we see the true face of the emperor. (D)The official history records the emperor's major affairs, while the wild history describes the emperor's daily affairs.