参考答案：C

解析：事实细节的找寻和判断。根据原文第一段最后一句“…which lies in the center of South Korea…”可知，选项a的说法是正确的；根据第二段第二句“The government chose the site of the new capital，which has yet to be named，over two other areas because of its superior transport and environmental conditions…”可知，选项b和d的说法是正确的；根据第四段第一句“But the relocation-which could cost as much as $94 billion”可知，选项C的说法与原文不符，因此该项是正确答案。 注意：掌握情态动词的语法知识是解题的关键。原文中关于费用问题使用了could表示一种对未来不确切的推测，而选项中的will却表达了确切的计划。