In a simple pendulum, the period of oscillation T is related to length of the pendulum l as

• A

  $\frac{\mathrm{l}}{\mathrm{T}}=\mathrm{constant}$

• B

  $\frac{{\mathrm{l}}^2}{\mathrm{T}}=\mathrm{constant}$

• C

  $\frac{\mathrm{l}}{{\mathrm{T}}^2}=\mathrm{constant}$

• D

  $\frac{{\mathrm{l}}^2}{{\mathrm{T}}^2}=\mathrm{constant}$