读中国民族分布图（如图），回答下列问题．
读“某城市某类自然灾害(X)分析模型示意图”(下图)，该类自然灾害近年来在我国大多数城市发生频率不断增加，其根本原因是( )
A. You can find our addresses from it.
B. You can find our information from it.
