A 70-year-old woman with diabetes and hypertension presents with new-onset confusion and inattention over 24 hours in the context of a urinary tract infection. According to delirium management principles, what is the most appropriate first step?AStart high-dose antipsychotics immediatelyBIdentify and treat underlying causes, optimise hydration and sensory input, and use non-pharmacologic strategiesCRestrain the patient physically to prevent wanderingDDischarge with sedative-hypnoticsEIgnore the confusion as normal ageingCheck my answer