How to determine if you have mesothelioma<br>Recognize that most mesothelioma cases are linked with asbestos. Most cases of mesothelioma have been linked to asbestos exposure. Asbestos is a naturally occurring fiber found in rocks, minerals, and soil.

Can we draw the following conclusion?
Asbestos is a natural substance in nature.

Options:
 (A). Yes
 (B). It's impossible to say
 (C). No
(A).