A force stretches a wire. The graph indicates how the extension of the wire changes with the applied force. At first, a force $W$ produces an extension of $d$. The force is then raised to $2W$. The extension then becomes $2d$. Which area on the graph shows the work done by the force as the force rises from $W$ to $2W$?
- AORQ
- BOQRS
- CORS
- DTMRS