Determine the radius and interval of convergence of the following power series. 4 X 3! + X 4! 12 X 5! + 16 X 6! 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.) B. The interval of convergence is. (Simplify your answer. Type an exact answer. Type your answer in interval notation.) If the power series f(x) = ck has an interval of convergence of |x| < R, what is the interval of convergence of the power series for f(x-a), where a #0 is a real number? The interval of convergence of the power series for f(x -a) is (Simplify your answer. Type an inequality.) If the power series f(x) = ckx has an interval of convergence |x|