Series \(\mathop \sum \limits_{n = 1}^\infty {\left( {\;{{\left( {\frac{{n + 1\;}}{n}} \right)}^{n + 1}} - \frac{{n + 1}}{n}} \right)^{ - n}}\) is

• A. divergent
• B. convergent
• C. oscillates finitely
• D. oscillates infinitely