A piece of yam weighing 1.0 gm was put into some salt solution. After 3 hours, it was removed and weighed.
The recorded weight was 1.2gms. This simple experiment demonstrates that the

• A.salt solution is more concentrated than the cell sap of the yam.
• B.cell sap of the yam is more concentrated than the salt - solution
• C.salt solution has the same concentration as the cell sap of the yam.
• D.the yam lost some water molecules to the salt solution.