<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 65-year-old male who is being treated for depression visits your emergency room complaining of being unable to urinate. In addition, the patient complains of tachycardia and dry mouth. He has no history of benign prostatic hyperplasia and reports of only being on one psychiatric medication. What type of psychiatric medication would cause such a side effect profile?? A: Monoamine oxidase inhibitor, B: Serotonin norepinephrine receptor inhibitor, C: Aminoketone, D: Selective serotonin reuptake inhibitor, E: Tricyclic antidepressant,  <response>: Based on the information provided in the question stem, the patient is experiencing urinary retention, tachycardia, and dry mouth as side effects of an antidepressant medication he is taking. The key clues are that he has no history of benign prostatic hyperplasia, which can cause urinary retention in older males, and that these symptoms started after beginning a new psychiatric medication. Tricyclic antidepressants TCAs are known to commonly cause anticholinergic side effects like urinary retention, dry mouth, blurred vision, and constipation. TCAs can also cause tachycardia and orthostatic hypotension due to their alpha-adrenergic blocking effects. The other antidepressant classes listed are less likely to cause this constellation of side effects. MAOIs can cause hypotension but not typically urinary retention or dry mouth. SNRIs may cause some mild anticholinergic effects but not to the degree of TCAs. Aminoketones like bupropion are stimulants and can cause tachycardia but not urinary retention or dry mouth. SSRIs have very minimal anticholinergic activity.E: Tricyclic antidepressant 