A site is load balancing to a pool of web servers. Which statement is true concerning BIG IP's ability to verify whether the web servers are functioning properly or not.

BIG-IP's HTTP and HTTPS health monitors allow administrators to define a 'Send String' (the request sent to the server, including specific paths like /myapp/status.html) and a 'Receive String' (the expected content or string in the server's response). This capability enables verifying the functional health of specific web pages and applications, not just basic server availability.

This is incorrect; web server monitors do not always verify 'index.html'. They can be configured to check any specified path and content.

This is incorrect because HTTP/HTTPS monitors can indeed test a page's content using the 'Receive String' parameter, beyond just network reachability.

This is incorrect because BIG-IP monitors can test the content of dynamic web pages as long as the expected 'Receive String' is consistently present in the response when the page is functioning properly.