In the diagram, D and S show the original demand and supply conditions for a good. Which row correctly shows how consumer surplus and producer surplus change if supply moves to $S_1$?
- Aconsumer surplus increases by U; producer surplus increases by S + T + U
- Bconsumer surplus falls by S + T; producer surplus falls by W + X
- Cconsumer surplus falls from S + T + U; producer surplus falls by Y + Z
- Dconsumer surplus falls R; producer surplus falls to S + V