Beryllium can cause people to become sensitized. Once an individual is sensitized, continued exposure can result in chronic beryllium disease, which involves scarring of the lungs. In a study of the effects of beryllium exposure, what would be the primary concern for individuals?
a) Sensitization to beryllium.
b) Chronic beryllium disease.
c) Scarring of the liver.
d) Immediate allergic reactions.