Calendar door number 19

The question is:

How does it move?

Latest submission time: Monday 21 December, 2015, 23:01 PM

Unfortunately, a solution for this question can no longer be submitted!

Answer
A) The wheel moves up and down from heating up when a hand is places on the glass.

Answer
B) Once illuminated, the wheel rotates in the direction of the black wings.

Correct answer Answer
C) Once illuminated, the wheel rotates in the direction of the silver-white wings.

Answer
D) Once heated up from a hand on the glass, the wheel rotates in the direction of the black wings.