Which Association Is NOT Correct

Which association is NOT correct?

A) Periodontitis is a loss of bone and loosening of teeth that occurs in old age.
B) Gingivitis is an inflammation of the gums that can spread to the periodontal membrane.
C) The loss of twenty deciduous teeth is a natural process that occurs when young.
D) Tooth decay or dental caries is a natural erosion of teeth from wear-and-tear.
E) Tonsillitis is an inflammation of the tonsils.