I dont know if it is a book or not but they will be guilty of planning/doing it sorry if the answer is bad
The correct answer is C. Surreptitious exchange of money.
They are secretly exchanging the money without witnesses which is what surreptitious means and it fits the chinked part.
Martin Luther King was a man who wanted white and black have peace with each other without racism another black person can stay another white person can stay with no other way just peace and no violence
