How does the HP Unified Functional Testing Web Add-in Extensibility feature improve browserindependent support?

A.
It supports testing custom controls on both Internet Explorer and Firefox. and on different
versions of these browsers.

B.
It supports browser-independent Web testing by replacing the Web Add-in.

C.
It extends Web testing support to Google Chrome and its different versions.

D.
It supports testing custom controls on different versions of Internet Explorer only.