The angle of elevation of the top of a vertical tower from a point A on the ground is 60^o. From a point B, 2 units of distance further away from the foot of the tower, the angle of elevation of the tower is 45^o. Find the distance of A from the foot of the tower

A. 3 + \(\sqrt{3}\)
B. 5 + \(\sqrt{3}\)
C. 3 - \(\sqrt{3}\)
D. 1  
E. \(\sqrt{3}\) - 1

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Correct Answer: D