The word BANK, written with straight strokes, is held in front of the dashed mirror. Which panel shows its mirror image?

In a vertical mirror the letter order is reversed (K comes first) and every letter is flipped left-to-right, so the K faces left and the B's bumps face left: (d). (c) reverses the order but leaves the K unflipped; (a) turns the word upside down and (b) is the word rotated by $180^{\circ }$.