Which of the following practices is the most logos-friendly?

A、Faking up some statistics so that my argument looks stronger -- no one will really check right?;
B、Using a quotation without citing the source to save time for my speech --
time is precious, man!;
C、Skipping an over-used example for a fresh one -- I spent time to find it but it's worth the time!;
D、Examples are for children -- I'll just tell my audience something is right and, if they are decent human beings, they should just do it.