Which Statement About ALS Is False

Which statement about ALS is false?

A) Death is caused by respiratory failure as motor neurons controlling this process are lost.
B) Protein aggregates known as spheroids are present in degenerating neurons.
C) Abnormal eye movements may serve as a marker for the disease prior to other symptoms.
D) There is evidence of both hereditary and nonhereditary causes, but specific genes have not been identified.