Which of the following statements is true?
a) Dementia appears to be a general consequence of ageing.
b) Dementia has not been associated with changes in the nervous system.
c) The incidence of dementia is predicted to increase over the next twenty-five years.
d) The prevalence of dementia is between 25% and 50% in people who are more than 85 years of age.
e) Dementia affects approximately 20% of the population over age 65.
Answer: D
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