<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 42-year-old woman is brought to the emergency department because of intermittent sharp right upper quadrant abdominal pain and nausea for the past 10 hours. She has vomited 3 times. There is no associated fever, chills, diarrhea, or urinary symptoms. She has 2 children who both attend high school. She appears uncomfortable. She is 165 cm 5 ft 5 in tall and weighs 86 kg 190 lb. Her BMI is 32 kgm2. Her temperature is 37.0C 98.6F, pulse is 100min, and blood pressure is 14090 mm Hg. She has mild scleral icterus. On physical examination, her abdomen is soft and nondistended, with tenderness to palpation of the right upper quadrant without guarding or rebound. Bowel sounds are normal. Laboratory studies show the following:BloodHemoglobin count 14 gdLLeukocyte count 9,000 mm3Platelet count 160,000 mm3SerumAlkaline phosphatase 238 ULAspartate aminotransferase 60 ULBilirubin Total 2.8 mgdLDirect 2.1 mgdLWhich of the following is the most appropriate next step in diagnosis?? A: Computed tomography CT scan of the abdomen, B: Endoscopic retrograde cholangiopancreatography ERCP, C: Hepatobiliary iminodiacetic acid HIDA scan of the biliary tract, D: Supine and erect X-rays of the abdomen, E: Transabdominal ultrasonography,  <response>: Based on the information provided in the question stem, this appears to be a case of a middle-aged woman presenting with symptoms and lab findings consistent with acute cholecystitis inflammation of the gallbladder. Key findings include right upper quadrant abdominal pain, nauseavomiting, mild jaundice, and elevated liver enzymes and bilirubin on lab tests. Imaging studies are needed to confirm the diagnosis. Ultrasonography is the initial imaging test of choice for suspected cholecystitis, as it is non-invasive, inexpensive, and does not use ionizing radiation. It can visualize gallstones, gallbladder wall thickening, pericholecystic fluid, and duct dilatation. CT scan and HIDA scan can also diagnose cholecystitis but are more expensive and not typically first-line. X-ray would not provide useful information in this case. ERCP is an invasive procedure used for therapeutic biliary intervention and would not be appropriate at this stage.E: Transabdominal ultrasonography 