Potato pieces of the same size were put into test-tubes with equal volumes of sucrose solution at different concentrations and left for 30 minutes. All the other variables were kept constant. After 30 minutes, the potato piece in one of the sucrose solution concentrations had stayed the same size. What may be concluded from the result for this potato piece?
- A1, 2 and 3
- B1 and 2 only
- C1 and 3 only
- D2 only