kindly solve this

4. All parts of this question concern the series M [1] (a) What is the lim of an for this series? n-+00 [1] (b) Does this series converge or diverge? [5] (c) Justify your answer to part (b) above. You may NOT simply state that it is p-series with p=1. Clearly state the test(s) you are using and justify the steps in using the test. [3] (d) Consider the series 1/3 + 1/6 + 1/9 + 1/12 + ... Does this series converge or diverge? Justify your