Environmental Science and Natural Resources

Which of the following is/are the effect(s) of air pollution on human beings?

a. Hydrocarbon vapours damage the internal organs and cause cancer.
b. Suspended particulate matter causes asthma, bronchitis and allergic cold.
c. Pollutant gases cause irritation in eyes, throat and lungs along with injuring lungs, liver, kidneys, spleen and nervous system.