CallCenter语音文件的情感分析通过文本分析进行并存储在关系数据库中。以下内容哪些是对的?(单选题)
(A)语音文件是非结构化数据,情感分析是结构化数据
(B)它们都是非结构化数据
(C)语音文件是结构化数据,情感分析是非结构化数据
(D)它们都是结构化数据
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