The force $F$ acting on a body of density $d$ is related by the equation $F=\frac{y}{\sqrt{d}}$. The dimensions of $y$ are:

• A
  $[L^{-\frac{1}{2}} M^{\frac{3}{2}} T^{-2}]$
• B
  $[L^{-1} M^{\frac{1}{2}} T^{-2}]$
• C
  $[L^{-1} M^{\frac{3}{2}} T^{-2}]$
• D
  $[L^{-\frac{1}{2}} M^{\frac{1}{2}} T^{-2}]$