A ladder of length 3.5 m just reaches the top of a wall. If the ladder makes an angle of $$60^{\circ}$$ with the wall, then what is the height of the wall (in m)?

A

$$\frac{7\sqrt{3}}{4}$$

B

1.75

C

$$3.5\sqrt{3}$$

D

$$\frac{3.5}{\sqrt{3}}$$