Bigbook RC question


I chose answer choice B , but the answer key says A

My logic was that it doesn’t mention in the passage about data being incorrect so eliminated A
can someone help please

The data that the scholars used to propose the Maunder minimum is the lack of recorded sunspot activity in the notes kept by European observers.
The records by the Chinese observers contradict this. This suggests that the data on which the Maunder Minimum was predicated were incorrect.