[单选题]
3. What are essentialwb 4q 3p58abfl propeb);+cd0d)j y .ybb bgu1of9l prties of stem cells?
A. They are specialised and can divide by meiosis.
B. They are specialised can divide by mitosis.
C. They can divide by mitosis and differentiate.
D. They can divide by meiosis and differentiate.