Which one of the following descriptions of the characteristics of big data and traditional databases are incorrect?

Which one of the following descriptions of the characteristics of big data and traditional databases are incorrect?
A . Big data is the data processing of "fish in the pond" with a clear goal; the data processing of traditional database is to judge whether other kinds of "fish" exist or not through some "fish"
B . There are many types of data processed by big data, including structured, unstructured, and semi-structured data; the traditional database has a relatively single type of data, often structured data predominates.
C . In big data, there is no unified data tool, that is, "No size fits all"; in traditional databases, in a specific business scenario, one tool can often solve a problem, that is, "One size fits all"
D . The data scale of big data is very large, generally TB and PB are used as the data processing unit; the data size in traditional databases is generally small, and MB is often used as the data processing unit

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Answer: A