This question is taken from a short story "We will Mash you",which is about Charle's miserable fate at school. Charles was feeling dread of returning as he drove away from the school at the end of the story. The moral of this story was that a tough school is the building ground for a strong character.
The answer is B, to add something or clarify a statement
Answer:
Because he's a serial killer.He didnt have any personal vendetta against Sherlock. He was a serial killer and Sherlock was supposed to be his next victim.
Explanation: