Which one of the following statements is false?

Let S= n (0 1).Which one of the following statements is FALSE? (A) There exist sequences fa,) and {b,} in [0,1] such that S= [0,1]\ U-1 (a,, ba) (B) [0,1]\S is an open set (C) If A is an infinite subset of s, then A has a limit point (D) There exists an infinite subset of S having no limit points