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: Pathology
Raynaud's phenomenon is seen in: 
Select and explain. 
A. Scleroderma., B. Lupus erythmatosus., C. Both., D. None.
C: Both.
Answer: C: Both. 
Explanation: None