A 65-year-old woman sees his primary care physician for lower back pain and poor appetite. His past medical history is remarkable for hypertension. The physical examination shows blood pressure of 110/70 mmHg, a pulse of 90/m. and tenderness over his mid- lumbar-spino and pitting edema over his shins. Urinalysis reveals specific gravity 1.015, pH 5.0,1 protein, blood trace What is the most likely cause of this patient's renal disease? Answers AE
A. Adenocarcinoma of the urinary track
B. Acute tubular necrosis due to hypotension
C. Obstruction of urinary flow
D. Diabetes Mellitus
E. Acute interstitial nephritis