The density of a non-uniform rod of leng...

The density of a non-uniform rod of length 1 m is given by `rho (x) = a (1 + bx^2)` where a and b are constant and ` 0 le x le 1`. The center of mass of the rod will be at

A

`(3(2+b))/(4(3+b))`

B

`(4(2+b))/(3(3+b))`

C

`(3(3+b))/(4(2 +b))`

D

`(4(3+b))/(3(2+b))`

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