You are answering a USMLE-style medical question. Question: A 49-year-old female with a history of alcoholism was found lying unconscious on a bench at a local park and rushed to the emergency department. Upon arrival, the patient regained consciousness and complained of intense bilateral flank pain and a recent decrease in urination. Urine microscopy demonstrated abundant square crystals of calcium oxalate that looked like “folded envelopes." Which of the following findings is most likely to be seen in this patient: Options: A) Anion gap metabolic acidosis B) Non-anion gap metabolic acidosis C) Respiratory acidosis D) Respiratory alkalosis Reply with ONLY the letter of the correct answer (A, B, C, or D). No explanation.