Which of the following laboratory combinations is most expected in a 75-year-old woman with lung cancer and hyponatremia? (poll 8191357)

Which of the following laboratory combinations is most expected in a 75-year-old woman with lung cancer and hyponatremia?

A. Serum osmolarity high, urine osmolarity high, urine sodium low

B. Serum osmolarity high, urine osmolarity low, urine sodium low

C. Serum osmolarity low, urine osmolarity high, urine sodium high

D. Serum osmolarity low, urine osmolarity low, urine sodium low

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