Find the x-values (if any) at which f(x) = x x2+4x is not continuous. A. f(x) is not continuous only at x = 0 and f(x) has a removable discontinuity at x = 0. B. f(x) is not continuous at x = 0, −4 and f(x) has a removable discontinuity at x = 0. C. f(x) is continuous for all real x. D. f(x) is not continuous only at x = −4 and f(x) has a removable discontinuity at x = −4. E. f(x) is not continuous at x = 0, −4 and both the discontinuities are nonremovable.
