Which of the following statements about data warehousing and data mining is correct?

A) Data warehousing involves the process of collecting, storing, and managing large volumes of structured and unstructured data, while data mining refers to the extraction of meaningful patterns and insights from this data.
B) Data mining is primarily focused on data storage and retrieval, ensuring that data is easily accessible for analysis, while data warehousing involves advanced analytical techniques to discover hidden patterns.
C) Data warehousing systems are designed to support real-time transactional processing, allowing users to conduct operational tasks while analyzing historical data.
D) Data mining requires a predefined data structure and schema, limiting its application to only structured data types without the ability to analyze unstructured data.