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Two parabolas C and D intersect at two d...

Two parabolas C and D intersect at two different points, where C is `y =x^2-3` and D is `y=kx^2`. The intersection at which the x value is positive is designated Point A, and x=a at this intersection the tangent line l at A to the curve D intersects curve C at point B , other than A. IF x-value of point B is 1, then a equal to

A

1

B

2

C

3

D

4

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The correct Answer is:
C
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