A 63-year-old man is admitted to the hospital after suffering a cerebral infarction. A swallow study performed during the acute recovery period shows oropharyngeal dysphagia with aspiration. Despite being maintained on the appropriate dietary restrictions, the patient experiences an episode of vomiting while lying on his back and subsequently develops pneumonia. Which of the following lung regions is most likely to be affected?
a. Lingular segments of the left lung
b. Middle lobe segments of the right lung
c. Basilar segments of the right lower lobe
d. Posterior segment of the right upper lobe
e. Anterior segment of the left upper lobe
f. Posterior segment of the left upper lobe



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