Here's a problem to solve: Antonia is testing the properties of block A. • She puts block A on top of a hot metal block and then touches the block A with her finger. • She keeps her finger on the block A for several minutes, but block A still does not get hot. What can Antonia conclude about block A?

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

- A: It is a good conductor.
 
- B: It is a poor conductor.
 
- C: It is highly magnetic.
 
- D: It is nonmagnetic.
 