问题：

[多选]

You create a custom server control named Task that contains the following code segment.
You need to ensure that adding a Task control from the Toolbox creates markup in the following format. 
  
Which two actions should you perform？（）

A . Add the following code segment to the project’s AssemblyInfo.cs file. [assembly： TagPrefix（"DevControls"， "Dev"）]
B . Replace line 05 with the following code segment. [DefaultValue（"New Task"）]
C . Insert the following code segment immediately before line 03. [ToolboxData（"<{0}：Task runat=\"server\" Title=\"New Task\" />"）]
D . Replace line 10 with the following code segment. output.Write("<Dev:Task runat=\"server\" Title=\"New Task\" />")