The time period of a simple pendulum inside a stationary lift is $\sqrt{5}$s. What will be the time period when the lift moves upward with an acceleration $\frac{\mathrm{g}}{4}$?

• A

  $\sqrt{5} \mathrm{s}$

• B

  $2\sqrt{5} \mathrm{s}$

• C

  $(2 +\sqrt{5}) \mathrm{s}$

• D

  2 s