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If P(1) P(2) and P(3) P(4) are two focal...

If `P_(1) P_(2) and P_(3) P_(4)` are two focal chords of the parabola `y^(2)= 4ax` then the chords `P_(1) P_(3) and P_(2) P_(4)` intersect on the

A

directrix of the parabola

B

axis of the parabola

C

latus- rectum of the parabola

D

y-axis

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