A box with two terminals is connected across a cell of 2 V internal resistance `1 Omega` and with an ammeter and a key in series with it. When the key is closed, the ammeter shows a deflection which quickly drops to zero. The box most probably contains :

Options

A. Diode
B. Copper wire of resistance `1 Omega`
C. Resistance coil of `2 Omega`
D. Fuse wire.