A convex mirror of focal length f forms an image which is $\frac{1}{\mathrm{n}}$ times the object. The distance of the object from the mirror is

• A

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

• B

  $\left(\frac{\mathrm{n}-1}{\mathrm{n}}\right)\mathrm{f}$

• C

  $\left(\frac{\mathrm{n}+1}{\mathrm{n}}\right)\mathrm{f}$

• D

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