IMAT 2014 Q59 [Magnetism]

An earthed magnet is near a bar of material which is seen to be repelled by the magnet.

What could the bar of material be?

[The system is isolated and no currents are induced.]

A. A bar of unmagnetised soft iron.
B. A bar of unmagnetised cobalt.
C. A bar of electrostatically charged copper.
D. A bar of magnetised steel.
E. A bar of electrostatically charged aluminium.