<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 49-year-old woman presents to the office for a follow-up visit. She was diagnosed with cirrhosis of the liver 1 year ago and is currently receiving symptomatic treatment along with complete abstinence from alcohol. She does not have any complaints. She has a 4-year history of gout, which has been asymptomatic during treatment with medication. She is currently prescribed spironolactone and probenecid. She follows a diet rich in protein. The physical examination reveals mild ascites with no palpable abdominal organs. A complete blood count is within normal limits, while a basic metabolic panel with renal function shows the following:Sodium 141 mEqLPotassium 5.1 mEqLChloride 101 mEqLBicarbonate 22 mEqLAlbumin 3.4 mgdLUrea nitrogen 4 mgdLCreatinine 1.2 mgdLUric Acid 6.8 mgdLCalcium 8.9 mgdLGlucose 111 mgdLWhich of the following explains the blood urea nitrogen result?? A: Use of probenecid, B: Liver disease, C: Spironolactone, D: Increase in dietary protein, E: The urea value is within normal limits,  <response>: This is a multiple choice question asking about the cause of the blood urea nitrogen BUN level in a 49-year-old woman with cirrhosis of the liver and a history of gout. The key information in the stem is that she has cirrhosis, is on spironolactone and probenecid, follows a high protein diet, and has a BUN of 4 mgdL. The normal range for BUN is typically between 7-20 mgdL, so her level of 4 mgdL is low. This rules out choices A and D, as probenecid and increased protein intake would not cause a low BUN. Choice E is incorrect because the BUN is below the normal range. Of the remaining choices, liver disease choice B can cause low BUN due to reduced urea synthesis by the diseased liver. Spironolactone choice C does not directly affect BUN. Therefore, the low BUN in this patient is most likely explained by her underlying liver disease.B: Liver disease 