2. Determine the truth of each of the following sentences, supporting vour answer with a Venn diagram or perhaps a specific counterexample: a) (V set A) (V set B) (V set C)[A-(BUC)-(A-B)n(A-C)] b) (V set A) (V set B) (V set C)[ AU (B- C) (A UB) - C)] c) V set A) (V set B) (V set C) [(A UB) nC (An B) U (An C)]