Why was Emmett Till brutally murdered?

AHe killed a white woman in Chicago.
BHe raped a married woman in Chicago.
CHe stole from a white man in Mississippi.
DHe flirted with a married white woman in Mississippi.

Verified Answer :

Emmett Till was brutally murdered because he flirted with a married white woman in Mississippi. The correct answer is D. He was killed by that woman's husband and brother.

Answer:

He flirted with a married white woman in Mississippi.

OR

He spoke to a white woman.