A Patient Has Been Admitted to the Hospital Due to Complaints

A patient has been admitted to the hospital due to complaints of difficulty breathing.His ABGs report pH = 7.20,PaCO₂ = 63.4,PaO₂ = 51,HCO₃- = 30;PFTs report TLC = 120% predicted,VC = 115% predicted,RV = 130% predicted,FEV₁ = 48% predicted.A chest x-ray indicates infiltrates in the right lower lobe.Which of the following diagnostic conclusions BEST summarizes this patient's condition?

A) The patient has a lung infection,acute metabolic acidosis,and mild chronic obstructive pulmonary disease.
B) The patient has pneumonia,acute respiratory acidosis,and severe chronic obstructive pulmonary disease.
C) The patient has a lung infection,acute respiratory alkalosis,and mild restrictive pulmonary disease.
D) The patient has pneumonia,acute metabolic alkalosis,and severe restrictive pulmonary disease.