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The eccentricity of an ellipse whose cen...

The eccentricity of an ellipse whose centre is at the origin is `1/2`. If one of its directrices is x = - 4, then the equation of the normal to it at (1, 3/2) is :

A

`x+2y=4`

B

`2y-x=2`

C

`4x-2y=1`

D

`4x+2y=7`

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The correct Answer is:
C
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