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Which functions does NOT implement the Karnaugh map given below?

1. $(w + x) y$
2. $xy + yw$
3. $(w + x) (\bar{w} + y) (\bar{x} + y)$
4. None of the above
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Please derive the expression which is in option C

solving K map gives xy +wy
selected
Why answer is D why not B,  xy+wy = xy + yw Why considering them different?
^^ There is NOT in question

a, b and c are same.
I am sorry, I didn't see NOT in the question.
how to get the 2nd option..??
Please derive the expression which is in option c

After simplification we get WY+XY
So Ans is Option D

Ans is C