A thin converging lens has an object positioned $20\ \text{cm}$ in front of it. The scale diagram shows the lens producing a real, inverted image. Which row states the focal length of the lens and the image distance from the lens?
- Afocal length $4.0\ \text{cm}$, distance of image $5.0\ \text{cm}$
- Bfocal length $5.0\ \text{cm}$, distance of image $4.0\ \text{cm}$
- Cfocal length $8.0\ \text{cm}$, distance of image $10.0\ \text{cm}$
- Dfocal length $10.0\ \text{cm}$, distance of image $8.0\ \text{cm}$