Consider an electron in the ${\mathrm{n}}^{\mathrm{th}}$ orbit of a Hydrogen atom in the Bohr model. The circumference of the orbit can be expressed in terms of de Broglie wavelength  $\mathrm{\lambda }$ of the electron as 

• A

  $(0.529)n\lambda$

• B

  $\sqrt{n}\lambda$

• C

  $(13.6)n\lambda$

• D

  $n\lambda$