The nurse receives a health care provider's prescription to change a patient's IV from D5. half-normal saline with 40 mEq KCl/L to DSNS with 20 mEq KCl/L. Which set of serum laboratory values supports the rationale for this IV prescription change?

D Sodium level of 144 mEq/L, potassium level of 3.7 PROTOCOL mEq/L. A Sodium level of 136 mEq/L, potassium level of 4.5 mEq/L. B Sodium level of 145 mEq/L, potassium level of 4.8 mEq/L. C Sodium level of 135 mEq/L, potassium level of 3.6 mEq/L.