Radiation therapy for cancer works because a cell’s DNA is exposed during mitosis and most vulnerable to damage from radiation. Because cancer cells are uncontrollably undergoing mitosis, they die when exposed to the treatment. The common side effects of radiation treatment are hair loss and vomiting. What does this imply?

a) Radiation treatment will be most effective for the treatment of skin and stomach cancers.
b) Radiation treatment will be ineffective in treating stomach cancer.
c) Both skin and stomach cancer will be made worse if treated with radiation.
d) Radiation therapy is an ineffective way to treat cancer.
e) Both stomach and skin cells are constantly being replaced.