Folded left onto right and then left onto right again, a square sheet becomes a narrow strip. A round hole is punched near the bottom and a square hole near the top. Which figure shows the opened sheet?

Undo the second fold: the twins appear mirrored across the line one quarter in from the right. Undo the first fold: everything is mirrored across the centre line. The round holes end up evenly spaced, but the square holes come in two close pairs: (c).