You ASP.NET application manages order entry data by using a DataSet object named EXorderEntry. The EXorderEntry object includes two DataTable objects named orderNames and OrderDetails. A ForeignKeyConstraint object named orderDetailsKey is defined between the two DataTable objects. You attempt to delete a row in orderNames while there are related rows in OrderDetails, and an exception is generated.What is the most likely cause of the problem?

• The current value of OrderDetails.KeyDeleteRule is Rule.Cascade.
• The current value of OrderDetails.KeyDeleteRule is Rule.SetNull.
• The current value of OrderDetails.KeyDeleteRule is Rule.SetDefault.
• The current value of OrderDetails.KeyDeleteRule is Rule.None.