The value of $$\left(1 - \frac{1}{5}\right)\left(1 - \frac{1}{6}\right)\left(1 - \frac{1}{7}\right) ........ \left(1 - \frac{1}{20}\right) =$$

A

$$\frac{5}{19}$$

B

$$5$$

C

$$\frac{19}{5}$$

D

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