If you accept either C or D as the correct revision then you have to accept both of them. Hence the best way to treat the sentence is to ignore both of them.
B is not correct either. You can over punctuate.
That leaves A.
Sometimes the right answer to many things is to do nothing. My dad used to say "Don't fix what isn't broke."
A is the answer <<<<<
The judge selected the winner "himself." <--adds more emphasis to the sentence overall.
Answer: “Sir Edmund and his son, Cecil”
Explanation: bro I had a psychology teacher my sophomore year who’s name was Cecil and he was literally the coolest mf guy ever.
