The most accurate answer among the options provided is:
**b. Archeologists have found burials containing the king with chariots, horses, and servants. Scholars believe that the sudden appearance of the chariots was due to the influence of the Indo-Europeans in China.**
Archaeological evidence from ancient Chinese burials shows the presence of chariots, horses, and servants, indicating their importance in warfare and society during that time. The appearance of chariots in China around 1200 BC is often attributed to the influence of the Indo-Europeans, who were known for their chariot technology and expertise in warfare. While there may be other sources and evidence contributing to our understanding of the ancient Chinese chariot, option (b) best represents the evidence mentioned in the question.