The value of $$\frac{33}{40} + \frac{1}{5} \left[\frac{4}{5} - \frac{1}{5} \times \left(\frac{7}{8} - \frac{5}{4}\right)\right] - \frac {4}{5}$$ is:

A

$$\frac{1}{5}$$

B

$$\frac{1}{4}$$

C

$$\frac{1}{7}$$

D

$$\frac{1}{3}$$