Which of these are not available to instrument a web application with BrowserMetrix?

Use Riverbed Steelhead to inject the script at run time from the web server.

Use Riverbed Stingray to inject the script at run time from the web server.

Manually paste the Javascript in any web page you want to monitor with BrowserMetrix.

Edit a master file for the application by adding the Javascript to the header section of the file.