The figure shows the motion of a planet around the sun in an elliptical orbit with the sun at the focus. The shaded areas $A$ and $B$ are also shown in the figure,which can be assumed to be equal. If ${t_1}$ and ${t_2}$ represent the time taken for the planet to move from $a$ to $b$ and $d$ to $c$ respectively,then:
- A${t_1} < {t_2}$
- B${t_1} > {t_2}$
- C${t_1} = {t_2}$
- D${t_1} \le {t_2}$
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