$$1, \frac{1}{2}, \frac{1}{6}, \frac{1}{24}, .........., \frac{1}{720}, \frac{1}{5040}$$

A

$$\frac{1}{100}$$

B

$$\frac{1}{120}$$

C

$$\frac{1}{72}$$

D

$$\frac{1}{240}$$