(2 points) (a) Use the comparison test to carefully determine if 1 converges or diverges: this series n2+5" n=1 A. converges B. diverges (b) Use the ratio test to carefully determine if 5" converges or diverges: this series n2 n=1 A. converges B. diverges (c) Use the alternating series test to carefully determine if E (-1)"-1 converges or diverges: thi series Vn+n? n=1 A. converges B. diverges (d) Use the limit comparison test to carefully determine if converges or diverges: this series 5 /n+n n=1 A. converges B. diverges Enter your solution here for 2 points and upload your written work on URCourses for 8 points.