For any two groups A and B, A ∪ (A ∩ B) = ?

1.	For any two groups A and B, A ∪ (A ∩ B) = ?
A.	O
B.	B
C.	A ∩ B
D.	A
Answer» E.

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For any two groups A and B, A ∪ (A ∩ B) = ?

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