Two masses $M$ and $m$ are attached to a vertical axis by weightless threads of combined length $l$. They are set in rotational motion in a horizontal plane about this axis with constant angular velocity $\omega$. If the tensions in the threads are the same during motion,the distance of $M$ from the axis is

• A
  $\frac{Ml}{M + m}$
• B
  $\frac{ml}{M + m}$
• C
  $\frac{M + m}{M}l$
• D
  $\frac{M + m}{m}l$