Which one of the following disorders is most likely to be associated with retention of carbon dioxide?

[Kathryn]

#october2020mccqe1

Which one of the following disorders is most likely to be associated with retention of carbon dioxide?
(A) An acute asthmatic attack
(B) Lobar pneumonia
(C) Exacerbation of chronic bronchitis
(D) 'Pure' (uncomplicated) emphysema
(E) Chronic pulmonary tuberculosis