The normal to the curve x=a(cos theta + ...

The normal to the curve `x=a(cos theta + theta sin theta), y=a(sin theta - theta cos theta)` at any `theta` is such that

A

it makes a constant angle with X-axis

B

it passes through the origin

C

It is parallel to Y-axis

D

it is at a constant distance from the origin

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The correct Answer is:

D

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