Cancer is a disease of the tissues of the body which occurs when cells begin to grow and replicate rapidly. These cells are capable of becoming masses called tumours which can obstruct the parts of the body in which they are found. Some of these tumours are also able to spread to other parts of the body in a process known as metastasis. The incidence of cancer has significantly increased recently in the Western developed world. The most common form of cancer in the UK is breast cancer, even though it very rarely affects men. Most cancers seem to have no obvious cause whilst a few are known to have a specific cause. Mesothelioma, for example, is a type of lung cancer that is caused by exposure to asbestos. People who have worked with asbestos without adequate protection in the past are eligible for compensation from the government. Before the 19th century, the only way to treat a cancer was to physically remove the tumour from the body. This usually involved amputation or removing a lot of tissue. It was only in the 19th century when improvements in surgical hygiene enhanced the success rates of tumour removal. At this time, Marie and Pierre Curie discovered the first non-surgical treatment, which involved irradiating the tumour.

Question: Everyone exposed to asbestos will eventually suffer from mesothelioma.
Options:
A. true, B. false, C. uncertain
Answer: "C"