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If the tangent to y^(2)=4ax at the point...

If the tangent to `y^(2)=4ax` at the point `(at^(2),2at)` where `|t|gt1` is a normal to `x^(2)-y^(2)=a^(2)` at the point `(asectheta. tan theta)`, then,

A

`t=-cosectheta`

B

`t=-sectheta`

C

`t=2tantheta`

D

`t=2cot theta`

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