Which statement is INCORRECT regarding multiple sclerosis?

• A. It is 2-3 times more common in females
• B. The most common reported symptom initially is sensory loss.
• C. Optic neuritis is usually unilateral can afferent pupillary response may be present.
• D. The majority of patients will show plaques on MRI T2 weighted scans.
• E. CSF often shows elevated protein, gamma-globulin and slightly elevated WCC.