This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
Hepatitis C virus is associated with -a) Anti LKM - I antibodyb)  Sclerodermac) Cryoglobulinemiad) Polyarteritis nodosa 
Select and explain. 
A. a, B. ac, C. ad, D. b
B: ac
Answer: B: ac 
Explanation: None