The angles of elevation ofthe top of a tower from two points A and B lying on the horizontal through the footof the towerare respectively $$15^\circ$$ and $$30^\circ$$. If A and B are on the same side of the tower and AB=48 metre, then the height of the tower is

A

$$24 \sqrt{3}$$ metre

B

24 metre

C

$$24 \sqrt{2}$$ metre

D

96 metre