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