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:Compared with small and medium-sized cities, especially small cities and towns, large cities have higher living costs, which inevitably limits the entry of rural population.Therefore, the development of large cities alone cannot actually achieve urbanization ###Question:Which of the following is the conclusion must be assumed ###Options: (A)Urbanization is the only way for China's development (B)Simple development of large cities is not conducive to the promotion of urbanization (C)To achieve urbanization, the city must fully absorb the rural population (D)The attractiveness of large cities to the rural population in the outside world is significantly lower than that of small and medium-sized cities Please reply with exactly 4 paragraphs and separate each paragraph with two new lines. The very first paragraph must start with the word "records".
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