Let f:(0, oo) in R and F(x) =underset(0)...

Let `f:(0, oo) in R and F(x) =underset(0)overset(x) int f(t) dt`. If `F(x^(2))=x^(2)(1+x)` then f (4) equals

A

`(5)/(4)`

B

7

C

4

D

2

Verified by Experts

The correct Answer is:

C

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