A 55-year-old man is referred to the electrodiagnostic lab for evaluation of large fiber polyneuropathy by his primary care physician. However, based on the history and examination, you suspect there is an underlying diffuse neurogenic process. Nerve conduction study reveals decreased motor amplitudes with normal sensory responses. Needle EMG revealed diffuse active denervation in multiple myotomes. Based on this, you suspect that the patient has a form of motor neuron disease. Which of the following is the most appropriate next step?

A. Tell the patient that he has amyotrophic lateral sclerosis (ALS)

B. Mention ALS in the report but tell the patient that he has nerve damage

C. Call the referring physician to explain your findings and concerns for motor neuron disease

D. Since the referring physician is an internist and might not understand motor neuron disease, refer the patient to the local ALS clinic