the answer would be "The clouds they were grey and autumn winds blew, and Denise McNair brought the number to two" hope this helped
He probably pointed out that they looked similar because Stryver asked one of the two accusers after being given the note, if he had ever seen someone that looked like Darnay before.
We can infer that it had something to do with their appearance.
And you could have mentioned that this is from "A Tale Of Two Cities"
A would be the correct answer