3. Which of the following statements is TRUE regarding continuity of a function f? a) If f(c) is undefined, then f is continuous at x = C. b) If lim f(x) = f(c)rthen f is continuous at x = C. xact c) If f is a piecewise-defined function, then it is continuous on its domain. d) If lim f(x) = lim f(x), then f is continuous at x = C. X-+c x-tet e) All of the above are FALSE statements