Here's a problem to solve: On a hot day, Jenny walked home from the grocery store with a bag of chocolate chips. When she arrived home the chocolate chips had melted in the bag. Why did the chocolate chips melt?

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

- A: Heat transferred from the chocolate chips to the bag.
 
- B: Heat evaporated from the bag to the chocolate chips.
 
- C: Heat transferred from the environment to the chocolate chips.
 
- D: Heat condensed from her hand to the chocolate chips.
 