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 application has a connection string that is defined as follows：   "Server=DB01；Database=Products Security=SSPI； Asynchronous Processing=true"   Your application contains the following code. （Line numbers are for reference only.）   01 protected void UpdateData（SqlCommand cmd）  02 {  03 cmd.Connection.Open（）；  04  05 lblResult.Text = "Updating ..."；  06 }   The cmd object takes forever 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