If a!=0 and the line 2b x+3c y+4d=0 pa...

If `a!=0` and the line `2b x+3c y+4d=0` passes through the points of intersection of the parabolas `y^2=4a x` and `x^2=4a y ,` then (a)`d^2+(2b+3c)^2=0` (b)`d^2+(3b+2c)^2=0` (c)`d^2+(2b-3c)^2=0` (d)none of these

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