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Let A, B, C be distinct subsets of a uni...

Let A, B, C be distinct subsets of a universal set U. For a subset X of U, let X' denotes the complement of X in U. Consider the following sets: `1. (A'nnB')nn(AuuBuuC')=(Auu(BuuC))'`

A

`1` only

B

`2` only

C

Both `1` and `2`

D

Neither `1` nor `2`

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The correct Answer is:
B
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