Find the series' interval of convergence and, within this interval, the sum of the series as a function of x F1 )2 Find the series' interval of convergence. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The interval of convergence is OB. The series converges only at x O C. The series converges for all values of x. 103 (Simplify your answer. Type a compound inequality. Use integers or fractions for any numbers in the expression.) (Simplify your answer. Type an integer or a fraction.)