A student uses a wooden clamp and a stand to support a bar magnet so that it hangs freely. The diagrams indicate that: in experiment 1, the student places a bar magnet beside the suspended magnet; in experiment 2, the student places an iron bar beside the suspended magnet; in experiment 3, the student places a steel bar beside the suspended magnet. In which experiments does the suspended magnet move?
- A1, 2 and 3
- B1 and 2 only
- C1 and 3 only
- D2 and 3 only