单选题：根据芝加哥大学教授法玛对有效市场的分类，如果有关证券的历史资料对证券的价格变动没有任何影响，则证券市场达到（　　）。

题目内容：
根据芝加哥大学教授法玛对有效市场的分类，如果有关证券的历史资料对证券的价格变动没有任何影响，则证券市场达到（　　）。 A．零效率
B．强型效率
C．弱型效率
D．半强型效率
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