At what points is the following function continuous? x - 216 x#6, x# -6 f(x) = x- 36 9. x=6 3. X= -6 Choose the correct answer below and, if necessary, fill in the answer box to complete your choice. O A. Only at x = (Use a comma to separate answers as needed.) O B. All real numbers except at x = (Use a comma to separate answers as needed.) O C. All real numbers x