Which XML elements should you include in Target 1, Target 2, Target 3 and Target 4…?

DRAG DROP
You are developing a WCF service.
You need to configure the web.config file to ensure that metadata is exposed only via the MEX protocol.
You have the following markup:

Which XML elements should you include in Target 1, Target 2, Target 3 and Target 4 to complete the
markup? (To answer, drag the appropriate XML elements to the correct targets in the answer area. Each
XML element may be used once, more than once, or not at all. You may need to drag the split bar
between panes or scroll to view content.)

Answer: