In General, When the Nonbicarbonate Buffer Concentration Is Normal, an Acute

In general, when the nonbicarbonate buffer concentration is normal, an acute PaCO₂ rise to a level of 60 mm Hg will be associated with which of the following changes in the [HCO3^-]?

A) [HCO3-] rises to approximately 34 mEq/L.
B) [HCO3-] rises to approximately 31 mEq/L.
C) [HCO3-] rises to approximately 26 mEq/L.
D) [HCO3-] rises to approximately 25 mEq/L.