3. Identify the most simple SOP
expression from the K-map
shown.

- B'C + AD + CD
- BC' + BCD' + AC'D'
- BC' + BCD' + AB'C'D'
- AD + BCD' + CD
- BC' + BD' +AC'D'

2 is WRONG. This expression can be simplified still
further. Hint: there is a more efficient way of grouping
the 1-entries in the K-map.

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