A yellow number plate reading UP 65, with an orange end-piece on the right, is reflected in a puddle. Which panel shows the reflection?

The reflection keeps left and right: the orange end-piece is still on the right and the characters still read U P 6 5 from left to right, but every character is upside down (the U becomes an arch, the 5 looks like a 2): (c). (d) moves the end-piece to the left, (b) is the plate itself and (a) is a half-turn.