You work as an application developer at Contoso.com. You use Microsoft .NET Framework 3.5 and Microsoft ADO.NET to develop an application that will connect to the Microsoft SQL Server 2005 database. You then define the connection string of the application as follows：   "Server=Prod；Database=WingtipToys；Integrated Security=SSPI；Asynchronous Processing=true"   The following code segment is used on the application： （Line numbers are included for reference only.）   01 protected void UpdateData（SqlCommand cmd） {   02     cmd.Connection.Open（）；  03  04     lblResult.Text = "Updating ..."；  05 }   You discover that the cmd object takes a long time to execute. You want to make sure that the application continues to execute while cmd is executing.   What should you do？（）

• A、A
• B、B
• C、C
• D、D
• E、E
• F、F
• G、G