- A'B' + A'C' + B'C + ABD'
- A'C' + B'C + ABD'
- A'B' + C'D' + ACD'
- A'B' + A'C' + AC
- A'B' A'C' + B'C + BC'D'

2 is CORRECT. It is difficult to read the groups in the most consise form in this kmap. However, the grouping for this answer are better than what is afforded by answer 1, which is the only other answer that is a correct representation, but is not optimal.