Which Factor(s)is/are Most Likely a Potential Cause(s)of Multiple Sclerosis (MS)

Multiple Choice

Which factor(s) is/are most likely a potential cause(s) of multiple sclerosis (MS) ?

A) Environmental factors and genetic predisposition
B) Allergic response to antiviral medications
C) Hypersensitivity reaction attacking the myelin
D) Bacterial infection of the myelin