Proof WritingMediumWriting It Up ShareWriting It Up · Medium problemWhich is the right LAST sentence of a proof of: "for every integer nnn, n2−nn^2 - nn2−n is even"?AHence 2∣62 \mid 62∣6. ■\blacksquare■BHence n2−nn^2 - nn2−n is even for every integer nnn. ■\blacksquare■CHence n2−n=2n^2 - n = 2n2−n=2. ■\blacksquare■DHence nnn is even. ■\blacksquare■Check Show answer Walk through it step by step Practice more like this Review this concept