Let A,B,A, B,A,B, and CCC be sets. Which of the following is always equivalent to (A∖B)∖C(A \setminus B) \setminus C(A∖B)∖C?
A∖(B∪C)A \setminus (B \cup C)A∖(B∪C)
A∖(B∩C)A \setminus (B \cap C)A∖(B∩C)
(A∖C)∪(B∖C)(A \setminus C) \cup (B \setminus C)(A∖C)∪(B∖C)
A∖(B∖C)A \setminus (B \setminus C)A∖(B∖C)