The frequency of vibration of a string is given by $\nu = \frac{p}{2l} \left[ \frac{F}{m} \right]^{1/2}$. Here $p$ is the number of segments in the string,$l$ is the length,and $F$ is the tension. The dimensional formula for $m$ will be:

• A
  $[M^0 L T^{-1}]$
• B
  $[M L^0 T^{-1}]$
• C
  $[M L^{-1} T^0]$
• D
  $[M^0 L^0 T^0]$