46. Which statement is true according to his passage? (A) Big data is simply large amounts of data collected and open to the public. (B) "Big data" is termed as "the new oil" because it emits carbon as huge as oil does. (C) Data protection only concerns the retrieval of the data sources. (D) Big data is valuable information available that can be used by companies to assess how well they perform and how they could improve. (E) The advantage of data leveraging is meeting customer needs.