Lily is researching the light-sensing rod cells of the eye. She decides to use stem cells to produce new rod cells. Which statement best explains why Lily is using stem cells for this purpose?


A. Specific genes in a rod cell’s DNA can be activated to produce new stem cells.

B. Specific genes in a stem cell’s DNA can be activated to produce new rod cells.

C. All genes in a rod cell’s DNA are activated, so new stem cells are produced each time the cell divides.

D. All genes in a stem cell’s DNA are activated, so new rod cells are produced each time the cell divides.

E. None of the genes in a rod cell’s DNA are activated, so new rod cells can be produced only from stem cells.