A locker carries the code R2X in straight strokes. Which panel shows the code as seen in the dashed mirror?

The order reverses to X 2 R and each character flips: X stays the same, the 2 turns into a 5-like shape and the R faces left: (a). (b) flips the characters but keeps the order R 2 X, (c) reverses the order without flipping, and (d) is upside down.