What is the correct way to write sentence 3?
A: Mathias was so obsessed with the Dodgers, that he was a true fanatic, I guess I shouldn't talk, since I was positive the Reds were the best baseball team in the world.
B: Mathias was so obsessed with the Dodgers and that he was a true fanatic, I guess I shouldn't talk since I was positive the Reds were the best baseball team in the world.
C: O Mathias was so obsessed with the Dodgers that he was a true fanatic; | guess I shouldn't talk since I was positive the Reds were the best baseball team in the world.
D: Mathias was so obsessed with the Dodgers. A true fanatic. I guess | shouldn't talk since I was positive the Reds were the best baseball team in the world.