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
All of the following are true about Raynaud\'s disease except - 
Select and explain. 
A. More cormnon in females, B. Positive antinuclear antibodies, C. Most common cause of raynaud's phenomenon, D. Has good prognosis
B: Positive antinuclear antibodies
Answer: B: Positive antinuclear antibodies 
Explanation: None