Which of the following are corect: 1. A-...

Which of the following are corect: 1. `A-B=A - (Ann B)` 2. `A = (A nnB) uu (A-B)` 3.`A - (B uu C) =(A-B) uu (A-C)`

A

1) 1 and 3

B

2) 2 only

C

3) 2 and 3

D

4) 1 and 2

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The correct Answer is:

D

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