<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 58-year-old woman comes to the physician because of a 6-month history of difficulty walking, clumsiness of her arms and legs, and slurred speech. Physical examination shows masked facies and a slow, shuffling gait. When her ankles are passively flexed, there is involuntary, jerky resistance. Treatment is initiated with a combination of levodopa and carbidopa. The addition of carbidopa is most likely to decrease the risk of which of the following potential adverse drug effects?? A: Resting tremor, B: Orthostatic hypotension, C: Urinary retention, D: Visual hallucinations, E: Dyskinesia,  <response>: This is a clinical vignette describing a patient with symptoms of Parkinsons disease, including difficulty walking, clumsiness, slurred speech, masked facies, and cogwheel rigidity. She is started on a combination of levodopa and carbidopa. Levodopa is converted to dopamine in the body and replaces the dopamine lost in the substantia nigra in Parkinsons disease. It can cause side effects like dyskinesias. Carbidopa inhibits the peripheral conversion of levodopa to dopamine, allowing more levodopa to cross the blood-brain barrier and convert to dopamine in the brain. This reduces the peripheral side effects of levodopa.The question asks which side effect carbidopa is likely to reduce. Based on the above, carbidopa reduces the peripheral side effects of levodopa like orthostatic hypotension. It does not affect central side effects like dyskinesia.B: Orthostatic hypotension 