The third one must be satire and if not your support for it must be

It's not hard to check, the guidelines are posted online:

https://www.stroustrup.com/JSF-AV-rules.pdf#page17

AV Rule 14 is the one in question. Uppercase suffixes are fine, lowercase is not, and the rationale is "Readability."

thank you for the link, I was too lazy to do the work myself