Which of the following is TRUE for the DB2 isolation level Cursor Stability (CS)?（）

• A、An application process acquires at least a share lock on the current row of every cursor.
• B、Any row that is read during a unit of work cannot be changed by other application processes until the unit of work is complete.
• C、Any row changed by another application process can be read, even if the change has not been committed by that application process.
• D、An application process that issues the same query more than once in a unit of work will not see additional rows caused by other application processes appending new information to the database.