Points: 0.5 of 1 Sa Suppose a power series converges if |4x - 4| $ 32 and diverges if |4x - 4| > 32. Determine the radius and interval of convergence. . . . The radius of convergence is R = 8 Find the interval of convergence. Select the correct choice below and fill in the answer box to complete your choice. O A. The interval of convergence is x: x = (Simplify your answer. Type an exact answer.) O B. The interval of convergence is ( - 7,9). (Simplify your answer. Type an exact answer. Type your answer in interval notation.)