Pick and copy all the incorrect options for the following question:

Every night, Johnny reads next to a lamp that is lit by an incandescent light bulb. Which is the best indication that the transfer of electrical energy to the lamp is inefficient?

Options:
- The bulb gets hot.
- The bulb produces light.
- The lamp uses copper wires.
- The lamp can be turned off at a switch.





- The bulb produces light.



- The lamp uses copper wires.



- The lamp can be turned off at a switch.

