8. 5. Let Cn be a positive series. Which of the following is/are correct? I. If lim n°/2c, = 3 then Cn is convergent. n=1 1 II. If c, = Σ 6 then (-1)" convergent. C. n=1 n=1 III. If lim e Cn 0 then Cn...

Extracted text: 8. 5. Let Cn be a positive series. Which of the following is/are correct? I. If lim n°/2c, = 3 then Cn is convergent. n=1 1 II. If c, = Σ 6 then (-1)" convergent. C. n=1 n=1 III. If lim e Cn 0 then Cn is convergent. n==1 IV. If lim 一 then Cn diverges. A) I only B) II only C)I, II and IV D)I, III and IV E) I and IV