This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sexual Disorders, Subject name: Psychiatry
[{'content': 'A 30-year-old male presents to OPD with erectile dysfunction. Basic screening evaluation is unremarkable. The next step in evaluation/management should be: \nSelect and explain. \nA. Oral sildenafil titrate trial, B. Cavernosometry, C. Doppler study, D. Neurological testing', 'role': 'user'}, {'content': 'Answer: A \nExplanation: In a young patient with negative screening, the most likely cause of erectile dysfunction is psychogenic erectile dysfunction. He should be given a trial of oral sildenafil. Alternatively, other drugs can also be used like Oral Phentolamine ,Alprostadil (intraurethral/ injectable) Psychotherapy can also be given specifically Dual Sex therapy ( Masters and johnson technique): In this couple is treated as a unit.', 'role': 'assistant'}]