The figure shows elliptical orbit of a planet m about the sun S. The shaded area SCD is twice the shaded are SAB. It $t_1$ is the time for the planet to move from C to D and $t_2$ is the time to move from A to B then

Question

( A ) $t_1=2t_2$
( B ) $t_1>t_2$
( C ) $t_1=4t_2$
( D ) $t_1=t_2$