बाल बिलकुल नहीं झड़ेगे सिर्फ 5 मिनट ये Exercise करो । hair fall treatment । no hair loss । #shorts

Which of the statement regarding treatment of cancer is false? I. Chemotherapy has side effects like hair loss and anaemia. II. Radon (Rn-220) is the most commonly used isotope for radiation therapy. III. alpha - interferon are used as immunological substances which activate the immune system. IV. Isotope of carbon is also for radiation therapy.