In planetary motion the areal velocity of possition vector of a planet depends of angular velocity `(omega)` and the distance of the planet from sun (r). If so the correct relation for areal velocity is
A. `(dA)/(dt) prop omegar`
B. `(dA)/(dt) prop omega^(2)r`
C. `(dA)/(dt) prop omega r^(2)`
D. `(dA)/(dt) prop sqrt(omegar)`