His style was very very very very different
From everything I could find it was Carl himself, But if you heard the poem online somewhere it could've been anywhere. Where did you hear it?
D would probably be the most accurate.
For "He lived a year in a minute" I think it means that all of a sudden he looks very old, is tired, or maybe time went by really fast? Like I said I am not 100% sure so don't take my word for it. Heck I am not 10% sure, more like I am 5% sure, 20% at the most. Sorry if I am wrong.