What Might Be an Advantage to Using an Individual's Own

What might be an advantage to using an individual's own stem cells instead of pancreatic cell allografts to treat Type I diabetes?

A) Stem cells can disable the immune responses that led to the diabetes state in the first place.
B) This process should be far cheaper than the surgical intervention needed for the allograft.
C) You can't do this-stem cell research is still theoretical, not approved by the FDA, and is currently illegal in the US. As such, there is no advantage.
D) If you were able to use a person's own cells, it would be considered an autograft rather than an allograft. As such, there should be no HLA/MHC matching required, and no long-term anti-rejection drugs needed.