The ECG reveals a delta waves indicating Wolf Parkinson White Syndrome

A 27-year-old fit and healthy male has an ECG as part of his medical examination for employment as a pilot. The ECG reveals a delta waves indicating Wolf Parkinson White Syndrome.
What is the most appropriate treatment for this patient?
1- Atenolol
2- Flecainide
3- Radio-frequency ablation
4- Reassurance
5- Verapamil