You are answering a USMLE-style medical question. Question: A 68-year-old female presents to her primary care physician with a 7-month history of fatigue and low back pain. Her pain is not improved by over the counter analgesics. Laboratory analysis is notable for a calcium level of 11.5 mg/dL, creatinine level of 2.0 mg/dL, and blood urea nitrogen level of 30 mg/dL. Large eosinophilic casts are seen on renal biopsy. Which of the following findings is most likely to be seen on peripheral blood smear? Options: A) Abundant reticulocytes B) Linear aggregations of red blood cells C) Schistocytes D) Leukocytosis with abundant mature myeloid cells Reply with ONLY the letter of the correct answer (A, B, C, or D). No explanation.