For Which of the Following Cases Would Intraoperative Autologous Collection

Multiple Choice

For which of the following cases would intraoperative autologous collection NOT be contraindicated?

A) Abdominal surgery where there is potential for contamination of the surgical site by bowel contents.
B) Surgery on a pregnant mother where there is potential for contamination of the surgical site by amniotic fluid.
C) Orthopedic surgery where there is a risk of bacterial contamination.
D) Cardiac surgery where there is no risk of contamination with clotting agents.