Which excerpt from the text best supports the central message?

A. Heit died shortly after April 3 crash, but his parents and police are hoping the photo of the mundane text in his iPhone will serve as a stark reminder to drivers.

B. Heit was responding to a friend by typing "Sounds good my man, seeya soon, ill tw"

C. Alexander Heit's final text cut off in mid-sentence.

D. Witnesses told police Heit appeared to have his head down when he began drifting into the oncoming lane in the outskirts of Greeley, where the University of Northern Colorado is located.