<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:An investigator is developing a new intravenous medication that acts as a selective agonist at β-2 receptors. In addition to causing bronchodilation, this drug is most likely to have which of the following effects?? A: Decreased skeletal glycogenolysis, B: Increased gastrointestinal peristalsis, C: Peripheral vasoconstriction, D: Bladder detrusor relaxation, E: Increased uterine tone,  <response>: This is a pharmacology question asking about the effects of a β-2 receptor agonist. β-2 receptors are found in smooth muscle throughout the body and their stimulation causes smooth muscle relaxation. Bronchodilation occurs from relaxation of bronchial smooth muscle. Other effects would be:A Decreased skeletal muscle glycogenolysis - incorrect, this is mediated by β-2 receptors in skeletal muscle. B Increased GI peristalsis - incorrect, β-2 receptors cause relaxation of GI smooth muscle which would decrease peristalsis.C Peripheral vasoconstriction - incorrect, β-2 receptors cause vasodilation, not vasoconstriction. D Bladder detrusor relaxation - correct, β-2 receptors are found in the detrusor muscle of the bladder and their stimulation causes relaxation.E Increased uterine tone - incorrect, β-2 receptors cause uterine smooth muscle relaxation which would decrease tone.Therefore, the correct answer is D - bladder detrusor relaxation. This occurs from relaxation of the smooth muscle mediated by β-2 receptor agonism.D: Bladder detrusor relaxation 