Question: A 65-year-old man with a history of hypertension presents to the clinic with complaints of polyphagia, polyuria, and weight loss for 2 years. The patient has a strong family history of diabetes mellitus. On examination, his vitals are blood pressure 150/90 mm Hg, heart rate 76 bpm, and respiratory rate 16 breaths/min. Which of the following sets of initial laboratory investigations is most appropriate for this patient? Need Assignment Help? A. BUN, creatinine, electrolytes, and 24-hour urine collection B. BUN, creatinine, electrolytes, blood sugar, HbA1c, and renal ultrasound C. BUN, creatinine, electrolytes, HbA1c, and 24-hour urine collection D. BUN, creatinine, electrolytes, blood sugar HbA1c, and urine albumin/creatinine ratio