Air pollution can also indirectly cause other health issues and even deaths. Air pollutants can cause an increase in cancer including lung cancer, eye problems, and other conditions. For example, using certain chemicals on farms, such as the insecticide DDT (dichlorodiphenyltrichloroethane) and toxic PCBs (polychlorinated biphenyl), can cause cancer. Indoors, pollutants such as radon or asbestos can also increase your cancer risk. Lastly, air pollution can lead to heart disease, including heart attack and stroke.
Air pollution has been a major topic of discussion in two countries on opposite sides of the world, Country A and Country B. Country A has decided to make changes to current policies in an effort to reduce the amount of air pollution  they produce. Country B has decided that air pollution isn't so bad, so they don't make any changes to their policies regarding air pollution.
Which country will likely have more diagnosed cancer patients, Country A or Country B?