*1.Q1. Which ONE of the following statements is INCORRECT?(Required.)

A.   About one in fifteen Australian adults aged 15+ years were afflicted with root caries in 2004-06.

B.   Community-dwelling older adults in both Australia and New Zealand have lower levels of
      untreated root decay than their institutionalised counterparts.

C.   Root caries progresses slower than coronal caries.

D.  Compared with coronal caries, root caries is regarded as a different disease entity in terms of
      aetiology.