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# The normal at the point $(bt_1^2, 2bt_1)$ on a parabola meets the parabola again in the point $(bt_2^2 , 2bt_2)$ then :

( A ) $t_2 = t_1 - \frac{2}{t_1}$
( B ) $t_2 = t_1 + \frac{2}{t_1}$
( C ) $t_2 = -t_1 + \frac{2}{t_1}$
( D ) $t_2 = -t_1 - \frac{2}{t_1}$