from statement b- if we consider r to be 8 from the question and substitute it in the second statement ( 1+r/100 )^2 > 1.15, then the value of the left side of the inequality is 1.1664 so even if 'r' is slightly less than 8, ex 7.9, then the value of LHS wud still be > 1.5 so B is not sufficie...