The areas along china's coast are known to be wealthier than the interior regions of the country.
The area along chinese coast includes , Hebei, Tianjin, Shandong, Jiangsu, Shanghai, Zhejiang, Fujian, Guangdong, Guangxi, Haina etc
These are are known to be wealthier than the interior regions of the country.
Therefore, the Option A is correct.
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