Which of the following best describes the lock protection provided by DB2 for the current row of a cursor?（）
A. The cursor is only protected from updates and deletes by concurrent applications.
B. The row is only protected from positioned updates and deletes that reference another cursor of the same application.
C. The cursor is protected from positioned updates and deletes that reference another cursor of a different application.
D. The row is protected from updates and deletes by the current application and from positioned updates and deletes that reference another cursor of the same application.
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