Let s c r and 0s denote the set of points x in r such that every neighbourh0od of x contains some points of s as well as some points of complement of s. further

Let S c R and 0S denote the set of points x in R such that every neighbourh0od of x contains some points of S as well as some points of complement of S. Further, let S denote the closure of S. Then which one of the following is FALSE? (A) 0Q = R (B) O(R T) = 0T, TCR (C) O(T UV) = OTuOv, T, V C R, ToV# dp (D) OT = Tn (R\ T), T R