Did you get it right?
Compare panels A and B around the rental tag, wall clock, soda cup, pennants, and the foreground girl’s skate.

The Answer
The correct answer is: There are five visible changes in the roller-rink scene..
Here is why
- Difference 1: The rental tag reads 27 in A and 28 in B.
- Difference 2: The wall-clock minute hand points in a different direction.
- Difference 3: The soda straw changes angle.
- Difference 4: A striped pennant has a different stripe arrangement.
- Difference 5: The crossing pattern of the foreground skate lace changes.
Why people miss it
The bright rink and skaters dominate attention, while the changes sit in small foreground and wall details.
What answer did you get before checking?