The Race Riot at Elaine,Arkansas,began After

The race riot at Elaine,Arkansas,began after

A) a black boy swimming in the white section of a lake drowned after whites threw stones at him.
B) false reports circulated that black men were assaulting white women.
C) a black soldier killed a white police officer in an altercation.
D) a deputy sheriff led a posse to disrupt a meeting of tenant farmers who had organized to demand fairer treatment from their landlord.