A concave lens of focal length f produces an image $$\frac{1}{n}$$ times the size of the object. The distance of the object from the lens is

A

$$(n + 1)f$$

B

$$\frac{(n + 1)f}{n}$$

C

$$\frac{(n - 1)f}{n}$$

D

$$(n - 1)f$$