B) The wastes are radioactive and could cause cancer.
Explanation:
Nuclear reactors are devices used to initiate and control a self-sustained nuclear chain reaction. These devices are used at nuclear power plants for electricity generation.
The material used in a nuclear plant are highly radioactive and cancerous to the human body as their radiations are harmful.
Hence it important to dispose of wastes from nuclear power plants carefully because the waste from such plants are radioactive and could cause cancer.
