The expression : (1)/(sqrt((3x + 1)))...

The expression :
`(1)/(sqrt((3x + 1))) ( { ( (1 + sqrt(3x + 1))/(2) )^(7) - ( (1 - sqrt(3x + 1))/(2))^(7) } )`
is a polynomial in x of degree is :

A

7

B

5

C

4

D

3

Verified by Experts

The correct Answer is:

D

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