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: Surgery
Sequence of colour changes observed in Raynaud’s disease 
Select and explain. 
A. Red, blue, white, B. White, blue, red, C. Blue, red, white, D. White, red, blue
B: White, blue, red
Answer: B: White, blue, red 
Explanation: None