This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: AIIMS 2019, Subject name: Surgery
Rearrange the sequence of hand washing: a. b. c. d. 
Select and explain. 
A. a,c,d,b, B. b,c,a,d, C. d,a,c,b, D. c,a,b,d
A: a,c,d,b
Answer: A: a,c,d,b 
Explanation: None