According to your textbook, if you quoted Dr. Anthony D’Allesandro, a world-renowned transplant surgeon, on the organ shortage problem, what kind of testimony would you be using?

According to your textbook, if you quoted Dr. Anthony D’Allesandro, a world-renowned transplant surgeon, on the organ shortage problem, what kind of testimony would you be using?
A.Valid testimony.
B.Peer testimony.
C.Expert testimony.
D.Unbiased testimony.
正确答案：Expert testimony.