Least count of a vernier caliper is $$\frac{1}{20N}$$ cm. The value of one division on the main scale is 1 mm. Then the number of divisions of main scale that coincide with N divisions of vernier scale is :

A

$$(2N - 1)$$

B

$$\left(\frac{2N-1}{2N}\right)$$

C

$$\left(\frac{2N-1}{2}\right)$$

D

$$\left(\frac{2N-1}{20N}\right)$$