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Question

Question: If A ∩ B = B, then...

If A ∩ B = B, then

A

ABA \subset B

B

BAB \subset A

C

A=ϕA = \phi

D

B=ϕB = \phi

Answer

BAB \subset A

Explanation

Solution

Since AB=B,BAA \cap B = B , \quad \therefore B \subset A.