If the coefficients of r^(th), (r+1)^(th...

If the coefficients of `r^(th), (r+1)^(th), and (r+2)^(th)` terms in the binomial expansion of `(1+y)^(m)` are in A.P., then m and r satisfy the equation

A

`m^(2)-m(4r-1) +4r^(2)-2=0`

B

`m^(2)-m(4r+1)+4r^(2)=0`

C

`m^(2)-m(4r+1) +4r^(2)-2=0`

D

`m^(2)-m (4r-1) +4r^(2)+2=0`

Verified by Experts

The correct Answer is:

C

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