Pieces of potato tissue were placed in distilled water or in sucrose solutions of varying concentrations. The graph shows the percentage change in length of the potato tissue. Which row correctly indicates how the water potentials of the distilled water and sucrose solutions compare with the initial water potential of the potato tissue?
- Adistilled water: less negative; $0.1\,\text{mol dm}^{-3}$ sucrose solution: less negative; $0.5\,\text{mol dm}^{-3}$ sucrose solution: more negative
- Bdistilled water: less negative; $0.1\,\text{mol dm}^{-3}$ sucrose solution: more negative; $0.5\,\text{mol dm}^{-3}$ sucrose solution: more negative
- Cdistilled water: more negative; $0.1\,\text{mol dm}^{-3}$ sucrose solution: less negative; $0.5\,\text{mol dm}^{-3}$ sucrose solution: less negative
- Ddistilled water: more negative; $0.1\,\text{mol dm}^{-3}$ sucrose solution: more negative; $0.5\,\text{mol dm}^{-3}$ sucrose solution: less negative