Digital certificates

Johannes learns about certificate authorities and is concerned that he doesn't know which authorities to trust when browsing the web.

What is good advice for Johannes?

(Choice A)
"If you trust your browser, then you don't need to worry about exactly which certificate authorities to trust."
(Choice B)
"You'll have to decide which certificate authority to trust, but at least you can follow a standard checklist."
(Choice C)
"If you trust the website that you're visiting, then it doesn't matter whether you trust the certificate authority of their certificate."
(Choice D)
"Don't worry, there's only one certificate authority that you should trust, and it's easy to memorize one name."

AP®︎/College Computer Science Principles