Question:Which of the following are true about using ADO.NET DataSets and DataTables? 

A The connection to the database must remain valid for the life of the data objects 

B All tables in a dataset must come from the same database. 

C A given instance of a DataTable can be in only one DataSet 

D Changes made to multiple tables within a DataSet can easily be transferred to a new DataSet which contains only the changes 

E Content from multiple DataSets can easily be combined into a single DataSet that contains the net result of all changes. 

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