Why Would You Need to Isolate More Than One Type

Multiple Choice

Why would you need to isolate more than one type of stem cell when growing a replacement organ?

A) More than one type of stem cell is grown in case one type does not survive.
B) Growing replacement organs requires at least three types of stem cells.
C) Different tissues have different stem cells.
D) Organs are composed of more than one type of tissue.
E) C and D