I once worked as a 3rd party in a large internet news site and got assigned a task to replace their current captcha with a partner’s captcha system. This new system would play an ad and ask the user to type the name of the company in that ad.

In my first test I already noticed that the company name was available in a public variable on the site and showed that to my manager by opening the dev tools and passing the captcha test with just some commands.

His response: “no user is gonna go into that much effort just to avoid typing the company name”.

I would assume the machine would predict I take both because it would know me too well to belive there would be anything in B, so I would take A.