Which expression is equivalent to 2n/n+4 + 7/n-1 if no denominator equals zero?
A. (2n² + 5n + 28)/(n+4) (n - 1)
B. (2n² + 5n + 4)/(n+4 ))(n-1)
C. (2n² + 6n + 28)/(n+4) (n - 1)
D. (2n² + 6n + 4))/(n+4)(n-1)