In two different experiments, a magnet is moved close to an unmagnetised iron bar. As a result, the bar becomes magnetised. Which magnetic pole is induced at $X$ and which is induced at $Y$?
- Apole at $X$: N; pole at $Y$: N
- Bpole at $X$: N; pole at $Y$: S
- Cpole at $X$: S; pole at $Y$: N
- Dpole at $X$: S; pole at $Y$: S