Let U = \{1, 2, 3, 4\}, A = \{1, 2\}, B = \{2, 3, 4\} and C = \{1, 3, 4\}. One of the following is false:
(A\cap B) \times C = \{ (2,1), (2,3), (2,4) \}.
(A - C) \cup (B - C) = \{2\}.
A \times (B - C) = \{ (1,1), (1,2), (2,1), (2,2) \}.
(A \cap C')' - B = \emptyset
Correct answer: