A 48-year-old man with generalised anxiety disorder (GAD) has persistent worry, muscle tension and insomnia for over 6 months. There is significant functional impairment. According to NICE guidance, what is usually the first-line treatment?AHigh-dose benzodiazepinesBCognitive behavioural therapy (CBT) or other high-intensity psychological therapyCAntipsychotic medicationDLong-term beta-blocker therapy aloneENo treatment, as symptoms are commonCheck my answer