<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 41-year-old woman comes to the physician because of an 8-hour history of colicky abdominal pain and nausea. The pain worsened after she ate a sandwich, and she has vomited once. She has no history of serious medical illness. Her temperature is 37.2C 99.1F, pulse is 80min, and blood pressure is 13483 mm Hg. Physical examination shows scleral icterus and diffuse tenderness in the upper abdomen. Serum studies show:Total bilirubin 2.7 mgdLAST 35 ULALT 38 ULAlkaline phosphatase 180 ULγ-Glutamyltransferase 90 UL N 550Ultrasonography is most likely to show a stone located in which of the following structures?? A: Common bile duct, B: Common hepatic duct, C: Cystic duct, D: Gallbladder neck, E: Gallbladder fundus,  <response>: This is a clinical vignette describing a 41-year-old woman with acute onset colicky abdominal pain, nausea, vomiting, scleral icterus, and upper abdominal tenderness. Lab studies show elevated bilirubin, transaminases AST, ALT, alkaline phosphatase, and γ-glutamyl transferase. This clinical presentation is most consistent with acute cholecystitis and choledocholithiasis gallstone disease. The key finding in the question stem is the location of the gallstone seen on ultrasonography. Based on the patients presentation, the stone is most likely located in the common bile duct, causing obstruction and subsequent elevation in bilirubin and liver enzymes. Gallstones in the cystic duct or gallbladder neck would be less likely to cause the degree of jaundice and enzyme elevation described.A: Common bile duct 