Final answer:
A counterexample to the given statement would be when (A-B) ∩ (A-C) is not empty.
Step-by-step explanation:
A counterexample to the given statement would be:
Let A = {1, 2, 3}, B = {2, 3, 4}, and C = {3, 4, 5}.
Since B ∩ C = {3}, and (A - B) ∩ (A - C) = {1}, the statement (B ∩ C = A) implies that ((A - B) ∩ (A - C) = θ) is true. However, in the example we provided, it is false since (A - B) ∩ (A - C) is not empty.