If the angular momentum of a planet of mass $m$, moving around the Sun in a circular orbit is $L$, about the center of the Sun, its areal velocity is:\\
(1) $\frac { L } { m }$\\
(2) $\frac { 4 L } { m }$\\
(3) $\frac { m } { 2 m }$\\
(4) $\frac { m } { m }$