Which of the Following Circumstances Would Most Clearly Warrant Autologous $\mathrm{C}$

Which of the following circumstances would most clearly warrant autologous blood donation?

A) The patient has type-O blood.
B) The patient has sickle cell disease or a thalassemia.
C) The patient has elective surgery pending.
D) The patient has hepatitis $\mathrm{C}$ .