According to the passage, late seventeenth and early eighteenth-century Chinese records are important for which of the following reasons? A. They suggest that the data on which the Maunder minimum was predicated were incorrect. B. They suggest that the Maunder minimum cannot be related to climate. C. They suggest that the Maunder minimum might be valid only for Europe. D. They establish the existence of a span of unusually cold weather worldwide at the time of the Maunder minimum. E. They establish that solar activity at the time of the Maunder minimum did not significantly vary from its present pattern.