The presence of an irreversible hypoventilation due to weakness of the intercostal muscles and diaphragm MOST likely occurs in which of the following neurological disorders?

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Patients with amyotrophic lateral sclerosis develop irreversible hypoventilation resulting from weakness of the intercostal muscles and diaphragm,but the insidious onset of gradually developing dyspnea may delay the diagnosis.Nocturnal hypoventilation can occur despite only mild respiratory muscle dysfunction and normal gas exchange.

The Presence of an Irreversible Hypoventilation Due to Weakness of the Intercostal