Question: In a hospitalization unit, 15% of elderly people with dementia enter the year, most of them in very advanced stages. Pain is a frequent symptom in this type of patients. Point out the correct answer in patients with very advanced dementia: 
 Options:  <1> Untreated pain may manifest by agitation. <2> The Analog Visual Scale is the most appropriate for the assessment of pain due to its simplicity. <3> One-dimensional subjective scales are those recommended by experts to assess pain. <4> There are no specifically available scales designed to assess pain. <5> The administration of opioids for pain control is discouraged.
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