If you calculated the plasma osmolality of a child with plasma Na125 mEq/l, glucose 108 mg / dl, and BUN(blood urea nitrogen) 140 mg/dl, the most appropriate answer would be -

• A. 306 mOsm / kg
• B. 300 mOsm / kg
• C. 318 mOsm / kg
• D. 312 mOsm / kg