How much iodine is contained in the body of an adult person?
A. 5 to 10 mg
B. 10 to 20 mg
C. 20 to 50 mg
D. 50 to 100 mg
A. 5 to 10 mg
B. 10 to 20 mg
C. 20 to 50 mg
D. 50 to 100 mg