If y=ax^(5)+(b)/(x^(4))," then "(d^(2)y)...

If `y=ax^(5)+(b)/(x^(4))," then "(d^(2)y)/(dx^(2))=`

A

`-20 x^(2)y`

B

`20x^(2)y`

C

`(20y)/x^(2)`

D

`(40x^(5))/y^(3)`

Verified by Experts

The correct Answer is:

C

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