Think you know your sh*t...?

Only one of the following is true poo, the others are fake poos. So is it...

A: King George III had an illness that caused his poo to turn purple.
B: In 1939 a man called Billy McCullock was sentenced to four years in jail for hurling a turd off the roof of the Empire State building.
C : There is a road in the Northumberland town of Berwick-upon-Tweed called Poobum Lane.

Ready for more? Well stop stooling for time!