The Nurse Administers Potassium Iodide (KI) Tablets to a Client

The nurse administers potassium iodide (KI) tablets to a client who has been exposed to radiation from a nuclear weapon. What is the rationale for administering potassium iodide (KI) to this client?

A) Prevent thyroid cancer
B) Prevent brain cancer
C) Prevent liver cancer
D) Prevent renal cancer