Which of these is written correctly?
A) Jeanie, that is my sister, is going to help me set up for the art show.
B) Jeanie, whose my sister, is going to help me set up for the art show.
C) Jeanie, which is my sister, is going to help me set up for the art show.
D) Jeanie, who is my sister, is going to help me set up for the art show.