The speed of a homogeneous solid sphere after rolling down an inclined plane of vertical height h from rest without slipping will be

• A

  $\sqrt{\frac{10\mathrm{gh}}{7}}$

• B

  $\sqrt{\mathrm{gh}}$

• C

  $\sqrt{\frac{6}{5}\mathrm{gh}}$

• D

  $\sqrt{\frac{4}{3}\mathrm{gh}}$