The article states:
... Reminiscing won't reverse the effects of Alzheimer's disease, the most common
form of dementia. It's also not guaranteed to work for everyone, says Ruth Drew.
Why did the author include this information?
A To highlight the reasons why some dementia patients feel anxious
B To explain why only some elder care facilities have memory rooms
C To suggest that sensory cues cost too much to use
D To point out that there is no cure for dementia