A kite is flying with a string inclined at $$30^\circ$$ to the horizontal. The height of the kite (in meters) when the string is 15 m long is

A

7.5

B

$$\frac{15}{\sqrt{2}}$$

C

$$15 \frac{3}{\sqrt{2}}$$

D

$$\frac{15}{\sqrt{3}}$$