Two planets \( A \) and \( B \) having masses \( m_{1} \) and \( m_{2} \) move around the sun in circular orbits of \( r_{1} \) and \( r_{2} \) radii respectively. If angular momentum of \( A \) is \( L \) and that of \( B \) is \( 3L \), the ratio of time period \( \left( \frac{T_A}{T_B} \right) \) is:
