You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create an application. The application connects to a Microsoft SQL Server database. The application uses a DataTable named OrderDetailTable that has the following columns: “ID “OrderID “ProductID “Quantity “LineTotal Some records contain a null value in the LineTotal field and 0 in the Quantity field. You write the following code segment. (Line numbers are included for reference only.)

01DataColumn column = new DataColumn(“UnitPrice”, typeof(double));
02
03OrderDetailTable.Columns.Add(column);

You need to add a calculated DataColumn named UnitPrice to the OrderDetailTable object. You also need to ensure that UnitPrice is set to 0 when it cannot be calculated. Which code segment should you insert at line 02?

A.
column.Expression = “LineTotal/Quantity”;

B.
column.Expression = “LineTotal/ISNULL(Quantity, 1)”;

C.
column.Expression = “if(Quantity > 0, LineTotal/Quantity, 0)”;

D.
column.Expression = “iif(Quantity > 0, LineTotal/Quantity, 0)”;