A 43-Year-Old Female Arrived at the Emergency Department with Altered

A 43-year-old female arrived at the emergency department with altered level of consciousness. She complained of chronic but moderate severity acid indigestion. This was partially relieved by taking antacids. Her blood gases results are as follows:
RESULTS:
PH 7.60
PCO₂ 38 mm Hg
HCO₃^- 40 mEq/L
This patient demonstrates:

A) Respiratory acidosis.
B) Metabolic alkalosis.
C) Respiratory alkalosis.
D) Metabolic acidosis.