MCSD.NET - 70-315 Exam Interview Question:

Suppose 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?
A. The current value of OrderDetails.KeyDeleteRule is Rule.Cascade.
B. The current value of OrderDetails.KeyDeleteRule is Rule.SetNull.
C. The current value of OrderDetails.KeyDeleteRule is Rule.SetDefault.
D. The current value of OrderDetails.KeyDeleteRule is Rule.None.