This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Medicine
All the following are true about Atrial fibrillation, except 
Select and explain. 
A. Increased risk of thromboembolism, B. Digoxin for treatment, C. Anticoagulantion not required, D. Aspirin in low risk patients
C: Anticoagulantion not required
Answer: C: Anticoagulantion not required 
Explanation: There are two approaches to mitigate the risk related to cardioversion. One option is to anticoagulate continuously for 3 weeks before and a minimum of 4 weeks after cardioversion. A second approach is to sta anticoagulation and perform a transesophageal echocardiogram to determine if throm- bus is present in the left atrial appendage Ref Harrison 20th edition pg 1576