A Client Has Respiratory Acidosis

A client has respiratory acidosis.The nurse evaluates that treatment is being effective with which arterial blood gas values?

A) pH 7.28, HCO₃^- 12 mEq/L, PCO₂ 45 mm Hg, PO₂ 96 mm Hg
B) pH 7.32, HCO₃^- 17 mEq/L, PCO₂ 25 mm Hg, PO₂ 98 mm Hg
C) pH 7.35, HCO₃^- 36 mEq/L, PCO₂ 65 mm Hg, PO₂ 78 mm Hg
D) pH 7.48, HCO₃^- 12 mEq/L, PCO₂ 35 mm Hg, PO₂ 85 mm Hg