I think your options is wrong you should cross ❌ check this question ❓ and This question answer is Yttrium-90 is USED for treatment of cancer, particularly non-Hodgkin's lymphoma and liver cancer, and it is being used more widely, including for arthritis treatment. Lu-177 and Y-90 are BECOMING the main RNT agents. Iodine-131, samarium-153, and phosphorus-32 are also used for therapy.Explanation:1. Technetium-99 is produced during nuclear reactor operation, and is a byproduct of nuclear weapons explosions. Technetium-99 can be found as a component of nuclear waste. Technetium-99m is a short-lived form of Tc-99 that is used as a medical diagnostic tool.2. -60 is used medically for radiation therapy as IMPLANTS and as an external source of radiation exposure. It is used industrially in LEVELING gauges and to x-ray welding seams and other structural elements to detect flaws. Co-60 also is used for food IRRADIATION, a sterilization process.3. Iodine has proved effective in treating hyperthyroidism. Another medically important radioactive