If A, B, C be three sets such that A ∪ B = A ∪ C and A ∩ B = A ∩ C, then,
A. B = C
B. A = C
C. A = B = C
D. A = B
Answer:B
If A, B, C be three sets such that A ∪ B = A ∪ C and A ∩ B = A ∩ C, then,
A. B = C B. A = C C. A = B = C D. A = B