Which statement best describes the relationship between types of radiation and cancer risk?

• A. Non-ionizing visible light is the only radiation proven to cause cancer in humans.
• B. Microwave radiation contributes to the development of brain tumors and lymphoma.
• C. Ultraviolet radiation exposure increases the risk of skin cancers including melanoma.
• D. Low-dose X-rays and environmental radiation do not increase cancer risk.

Answer: (C)