An adult pt is admitted with status asmaticus. ABGs are pH 7.45, pCO₂ 29, pO₂ 60, HCO₃ 24. She is given 02 at 6 l per nasal cannula, epinephrine and albuterol (ventolin) treatments. Which of the ff ABG results are most indicative her condition is worsening
pH pCO₂ pO₂ HCO₃
A. 7.50 24 64 23
B. 7.34 47 59 21
C. 7.44 27 72 25
D. 7.43 39 69 24