I missed a turn and my older sister kept on saying " No , no , no , no , no ! " And we hit a car and killed a person . There was blood on the road .

Choices: (a). One person was killed and it was n't either sibling . (b). None of the above choices . (c). Both siblings were killed in the accident . (d). The younger sibling was killed in the accident .
Q: In the crash , was the sister or her sibling killed ?
(a).