Here's a problem to solve: Anna is holding an ice cube. Why does the ice cube melt in her hand?

Among the 4 following options, which is the correct answer?

- A: Heat moves from her hand to the ice cube.
 
- B: Cold moves from her hand to the ice cube.
 
- C: Heat moves from the ice cube to her hand.
 
- D: Cold moves from the ice cube to her hand.
 