NFHS question 55

[IHSAref]

I am having some trouble understand question number 55 on the NFHS exam. it states "THe ball is caused to go out of bounds by B1, who deflects A1's throw-in pass that then touches thrower A1 in light, who is still out of bounds." I am not understanding what the true/False is. I am not looking nessarliy for the anwser but something like what the NFHS is looking for on this question. Thanks!