Concerning Stem Cells, Which of the Following Statements Is Incorrect

Concerning stem cells, which of the following statements is incorrect?

A) Stem cells occur frequently in our bodies.
B) A stem cell can divide asymmetrically to give a daughter stem cell plus a daughter transit amplifying cell that can undergo a series of differentiation steps to give rise to a differentiated cell.
C) If for any reason, stem cells are depleted, a stem cell can divide symmetrically to regenerate the stem cell population.
D) In an adult person, stem cells are normally multipotent or unipotent.