The tangent at any point on the curve x^...

The tangent at any point on the curve `x^(4)+y^(4)=a^(4)` cuts off intercepts p and q on the coordinate axes then the value of `p^(-4 / 3)+q^(-4 / 3)=`

A

`a^(-4//3)`

B

`a^(-1//2)`

C

`a^(1//2)`

D

a

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The correct Answer is:

A

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